United States

587, Mint 6¢ XF NH Plate Block of 4 CV $325.00 - Stuart Katz

Custom Sku: SK-27565

$175.00

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2094 Var, Five Full Gutter Pairs In Full Sheet - UNIQUE & UNLISTED - Stuart Katz

Custom Sku: SK-27532

$3,290.00

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1356, Mint Misperfed Complete Sheet of 50 Stamps 6¢ Marquette - Stuart Katz

Custom Sku: SK-27355

$465.30

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1323, Misperforated Error Sheet of 50 5¢ Stamps REMARKABLE! - Stuart Katz

Custom Sku: SK-27486

$1,410.00

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583, Mint 2¢ XF NH Plate Block of 4 - A GEM! - Stuart Katz

Custom Sku: SK-27569

$200.00

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1767a, RARE Mispered 15¢ Trees Pane of 40 Stamps Mint NH - Stuart Katz

Custom Sku: SK-27520

$705.00

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1842a, Mint 15¢ Imperforate Pane of 50 Stamps - Stuart Katz

Custom Sku: SK-27533

$747.30

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1582, 2¢ With Large Perf Shift Error Sheet of 100 Stamps - Stuart Katz

Custom Sku: SK-27502

$465.30

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499, Imperforate at Top Plate Block of 20 Stamps ERROR - Stuart Katz

Custom Sku: SK-27499

$423.00

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The Art Magic Souvenir Sheet of 3 - Stamps Scott 5306

Custom Sku: 5306

$6.95

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1338Fj, Flag Imperforate Between PL# Strip of 20 Stamps CV $450.+ - Stuart Katz

Custom Sku: SK-27546

$329.00

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J97, Scarce Misperfed Error Block of 4 10¢ Postage Dues MNH - Stuart Katz

Custom Sku: SK-27441

$37.60

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Yellow Rose Pane of Twenty 32 Cent Postage Stamps 3049a

Custom Sku: 3049a

$16.95

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C63, Mint NH 15¢ Airmail Misperf Error Top Margin Block of Four - Stuart Katz

Custom Sku: SK-27472

$70.50

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1863, 22¢ Scarce Misperfed Bottom Margin Block Error Mint NH - Stuart Katz

Custom Sku: SK-27450

$37.55

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1824, MNH 15¢ Helen Keller Perf Shift Error Full Sheet of 50 Stamps Stuart Katz

Custom Sku: SK-27905

$277.30

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1729a, MNH 13¢ Imperforate Between PL# Block of 20 Stamps - Stuart Katz

Custom Sku: SK-27896

$329.00

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2141a, Mint NH 22¢ Misperfed Shift Error Block of Six Decoy Ducks - Stuart Katz

Custom Sku: SK-27481

$47.00

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1768, MNH 15¢ Perf Shift Error Full Sheet of 100 Stamps - Stuart Katz

Custom Sku: SK-27909

$747.30

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1767a, Mint NH 15¢ Misperfed Shift Error Block Trees -- Stuart Katz

Custom Sku: SK-27480

$117.50

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1451a, MNH HUGE Color Shift Error Plate Block Normal Included WoW - Stuart Katz

Custom Sku: SK-27476

$117.50

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1758, HUGE Misperfed Error Pair 15¢ Photography PL# Captured MNH - Stuart Katz

Custom Sku: SK-27405

$70.50

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1789, MNH 15¢ Dramatic Misperf Error In PB Block of 20 Stamps - Stuart Katz

Custom Sku: SK-27902

$371.30

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1824, 15¢ Pre Printing Paper Fold Error In PB Block of 20 Stamps - Stuart Katz

Custom Sku: SK-27903

$328.06

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2093, 20¢ Hard to Find Misperfed Error Pair Mint NH - Stuart Katz

Custom Sku: SK-27424

$37.60

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C104a, Mint NH 28¢ Airmail Misperf Block of Four Error Stamps - Stuart Katz

Custom Sku: SK-27473

$46.95

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1763a, Mint NH 15¢ Large Color Shift Error Plate Block Owls - Stuart Katz

Custom Sku: SK-27474

$70.50

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1596, MNH 13¢ Eagle Scarce Over Inking Error Sheet of 100 Stamps - Stuart Katz

Custom Sku: SK-27898

$277.30

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Ursula K. Le Guin Sheet of 20 Three Ounce Rate - Postage Stamps Scott 5619

Custom Sku: 5619

$34.67

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Western Wear Booklet Pane of 20 Current Rate Postage Stamps Scott 5618a

Custom Sku: 5618a

$19.63

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Mid Atlantic Lighthouses Sheet of 20 Current Rate Postage Stamps Scott 5621-25

Custom Sku: 5621-5

$19.63

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C51, Mint NH 7¢ Two Way Misperf Error Block of Four Stamps - Stuart Katz

Custom Sku: SK-27351

$56.35

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1452, Mint 6¢ Plate Block With A HUGE Color Shift Error - WoW - Stuart Katz

Custom Sku: SK-27353

$234.06

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1844a, Mint VF NH RARE Imperforate Pair Error 1¢ Dorothy Dix - Stuart Katz

Custom Sku: SK-27346

$188.00

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1856, Freak Perforations & Fold Over Error Sheet of 100 - Stuart Katz

Custom Sku: SK-27320

$893.00

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1556b, Mint VF NH 10¢ Dark Blue Color Omitted Error W/Normal - Stuart Katz

Custom Sku: SK-27338

$365.66

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RW5, Mint F/VF LH Federal Duck Stamp Cat $200.00 - Stuart Katz

Custom Sku: SK-21748

$99.00

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Tap Dancing Full Sheet of 20 Current Rate Postage Stamps Scott 5609-13

Custom Sku: 5609-13

$19.63

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Country and Western Music Legends 29 Cent Sheet of 20 Postage Scott 2771-74

Custom Sku: 2771-74

$12.95

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2561, Mint NH Huge Black 29¢ Color Shift Error Sheet of 50 - Stuart Katz

Custom Sku: SK-25737

$1,875.30

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1150, Mint NH Misperforated Error Block 4¢ Water Conservation - Stuart Katz

Custom Sku: SK-25739

$117.50

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C18, Mint VF/XF NH 50¢ Block of Four Stamps Cat $300.00 - Stuart Katz

Custom Sku: SK-25601

$199.00

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535, Mint VF-XF NH 3¢ Imperforate Block of Four -- Stuart Katz

Custom Sku: SK-25898

$89.95

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C22, Mint F/VF NH 50¢ Top Plate Block of Six Stamps ^^ Stuart Katz

Custom Sku: SK-25712

$55.00

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1008, MNH NATO Stamp Printed on Very Thin Paper ERROR -- Stuart Katz

Custom Sku: SK-11049

$117.50

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5393a, Mint XF NH Imperforate Pair Error George Bush - Stuart Katz

Custom Sku: SK-25694

$1,175.00

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C12, Mint Superb NH 5¢ Airmail - Stunning GEM! - Stuart Katz

Custom Sku: SK-25590

$40.00

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QE2a (wet) Mint NH Sheet of Fifty 10¢ Special Handling -- Stuart Katz

Custom Sku: SK-25443

$165.00

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C21, Mint VF NH 20¢ BottomPlate Block of Six Stamps -- Stuart Katz

Custom Sku: SK-25725

$65.00

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656, Mint NH 2¢ Edison Joint Line Coil Pair - Stuart Katz

Custom Sku: SK-26190

$35.00

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C22, Mint VF NH 50¢ Top Plate Block of Six Stamps ^ Stuart Katz

Custom Sku: SK-25710

$65.00

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1525, Mint NH 10¢ Misperfed Error VFW Anniversary - Stuart Katz

Custom Sku: SK-26039

$28.15

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628, Mint XF NH Well Centered Precise Margins - Stuart Katz

Custom Sku: SK-25629

$29.95

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QE1a (wet) Mint NH Sheet of Fifty 10¢ Special Handling - Stuart Katz

Custom Sku: SK-25440

$195.00

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1249, Mint NH 5¢ Misperforated Error Plate Block Register to Vote - Stuart Katz

Custom Sku: SK-25733

$117.50

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C21, Mint VF NH 20¢ BottomPlate Block of Six Stamps - Stuart Katz

Custom Sku: SK-25724

$65.00

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723, Mint VF NH 6¢ Pretty Coil Pair - Stuart Katz

Custom Sku: SK-26198

$18.00

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658-68, Mint F/VF NH Complete Set Kans Overprints - Stuart Katz

Custom Sku: SK-26213

$250.00

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753, Mint VF NH Bottom Arrow Block of Four Cat $70.00 -- Stuart Katz

Custom Sku: SK-26066

$49.95

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576, Mint XF NH 1-1/2¢ Top Plate Block of Six Stamps - Stuart Katz

Custom Sku: SK-26168

$40.00

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C22, Mint VF NH 50¢ Bottom Plate Block of Six Stamps - Stuart Katz

Custom Sku: SK-25719

$65.00

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566, Mint VF NH 15¢ Corner Margin Pair CV $70.00 - Stuart Katz

Custom Sku: SK-26158

$40.00

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1252, Mint VF NH Blue Color Omitted ERROR 5¢ American Music -- Stuart Katz

Custom Sku: SK-25655

$423.00

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1033, Mint NH 2¢ Jefferson Dramatic Misperfed Error - Stuart Katz

Custom Sku: SK-26034

$18.75

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1405, Massive Pre Printing Paper Fold Error In Block WoW - Stuart Katz

Custom Sku: SK-25734

$277.30

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C22, Mint VF NH 50¢ Top Plate Block of Six Stamps --*** Stuart Katz

Custom Sku: SK-25707

$65.00

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654, Mint VF NH 2¢ Wide Top Plate Block of Six Stamps - Stuart Katz

Custom Sku: SK-26073

$40.00

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C22, Mint VF NH 50¢ Top Plate Block of Six Stamps --****- Stuart Katz

Custom Sku: SK-25704

$65.00

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C22, Mint VF NH 50¢ Top Plate Block of Six Stamps --** Stuart Katz

Custom Sku: SK-25706

$65.00

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584, Mint VF NH 3¢ Lincoln Block of Four Stamps - Stuart Katz

Custom Sku: SK-26211

$150.00

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1444, Misperforated Error 8¢ Christmas Stamp Mint NH - Stuart Katz

Custom Sku: SK-25741

$18.75

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1393D, Mint NH 7¢ Remarkable Misperfed Zip Block Error - Stuart Katz

Custom Sku: SK-26046

$70.50

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1150, Misperforated Error 4¢ Water Conservation Stamp Mint NH - Stuart Katz

Custom Sku: SK-25738

$28.15

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2975w, Civil War Imperforate Sheet - MAJOR ERROR - Mint NH - Stuart Katz

Custom Sku: SK-09003

$705.00

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1158 Misperforated ERROR Pair - 4¢ Washington Monument - Mint NH -- Stuart Katz

Custom Sku: SK-05405

$42.30

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International Naval Review Sheet of Fifty 3 Cent Postage Stamps Scott 1091

Custom Sku: 1091

$12.95

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Stars and Stripes Sheet of 50 of Fifty 32 Cent Postage Stamps Scott 3153

Custom Sku: 3153

$24.95

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Joseph Priestley Chemist Sheet of Fifty 20 Cent Postage Stamps Scott 2038

Custom Sku: 2038

$20.95

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Summer Olympics Sheet of 50 of Fifty 13 Cent Postage Stamps Scott 2048-51

Custom Sku: 2048-51

$14.00

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American Inventors Sheet of 50 of Fifty 20 Cent Postage Stamps Scott 2055-58

Custom Sku: 2055-58

$18.95

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2980, Three Different Black Color Shift Errors - Mint NH - Stuart Katz

Custom Sku: SK-26121

$46.95

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Knoxville World's Fair Sheet of 50 of Fifty 18 Cent Postage Stamps Scott 2006-09

Custom Sku: 2006-09

$18.95

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658-68, Mint F-VF NH Set of Kansas Ovpt Stamps CV $431.50 -*- Stuart Katz

Custom Sku: SK-26134

$250.00

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2451a, Mint VF NH 4¢ Steam Carriage Imperforate Pair Error -- Stuart Katz

Custom Sku: SK-25143

$352.50

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1920's Postage Production Test Block of 30 Stamps - Stuart Katz

Custom Sku: SK-26119

$600.00

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U646a ENTIRE BLUE GRAY COLORS OMITTED ERROR - Stuart Katz

$84.55

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Q1, Mint Fine+ NH WHOLESALE GROUP OF 35 Parcel Post Stamps CV $420 - Stuart Katz

Custom Sku: SK-25461

$175.00

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920, Flag Shifted Well Down Freak, Error Block With Normal MNH - Stuart Katz

Custom Sku: SK-25659

$235.00

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1252, Mint VF NH Blue Color Omitted ERROR 5¢ American Music - Stuart Katz

Custom Sku: SK-25654

$423.00

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J69, RARE Mint NH Sheet of 100 Postage Due Stamps CV $498.00+ - Stuart Katz

Custom Sku: SK-25406

$350.00

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4640b, Mint NH RARE Imperforate Error Coil Pair - Stuart Katz

Custom Sku: SK-25304

$93.06

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589, Mint NH FVF 8¢ Nice Block of Four CV $230.00 - Stuart Katz

Custom Sku: SK-25873

$120.00

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570, Mint NH 50¢ Nice Block of Four CV $280.00 -- Stuart Katz

Custom Sku: SK-25875

$120.00

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589, Mint NH VF 8¢ Nice Block of Four CV $230.00 - Stuart Katz

Custom Sku: SK-25872

$140.00

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571, Mint $1 VF NH - Nice & Fresh - Lincoln Memorial -- Stuart Katz

Custom Sku: SK-25853

$50.00

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2427b, Mint XF 25¢ With Red Litho Color Omitted With Normal * Stuart Katz

Custom Sku: SK-25380

$352.50

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