United States

1947, 20¢ "C" Misperfed Error Coil Strip Of Four Stamps + Stuart Katz

$23.50

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1563, Mint NH 10¢ Large Misperforation Error - Stuart Katz

Custom Sku: 37918

$28.20

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2145, Mint NH 22¢ Ameripex Large Color Shift Error - Stuart Katz

Custom Sku: SK-04866

$28.09

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2065, Mint NH 20¢ Large Misperforation Error - Stuart Katz

Custom Sku: 37903

$28.20

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2073, Mint NH 20¢ - Misperf Error Showing Gutter * Stuart Katz

Custom Sku: 38872

$28.20

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1280, MNH 2¢ MASSIVE Perforation Shift Error Pair - Stuart Katz

Custom Sku: SK-27971

$28.15

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2065, Mint NH 20¢ Large Misperforation Error -- Stuart Katz

Custom Sku: 37904

$28.20

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1193, Mint NH 4¢ 99% of Yellow Color Missing Error With Normal - Stuart Katz

Custom Sku: 37914

$28.20

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1617, Mint NH 10¢ Stunning Misperforated ERROR Block - Stuart Katz

Custom Sku: SK-26233

$23.50

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C86, Mint NH 11¢ Black Color Shifted Freak Error With Normal - Stuart Katz

Custom Sku: SK-30539

$28.20

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1375, Mint NH 6¢ Scarce Misperfed Error Strip of Three - Alabama * Stuart Katz

Custom Sku: 38911

$23.45

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2998, Mint NH 60¢ With Large Color Shift Error - Stuart Katz

Custom Sku: SK-29062

$23.50

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1934, Large Misperf Error 18¢ Remington Stamp Mint NH * Stuart Katz

Custom Sku: 38900

$28.20

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1478, Mint NH 8¢ Scarce Misperfed Error Block * Stuart Katz

Custom Sku: 35336

$23.50

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1479, Fantastic Color Shift Down Freak Error Mint NH 8¢ * Stuart Katz

Custom Sku: SK-30278

$28.09

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1007, Mint NH 3¢ Misperf, Freak Error Block of Four * Stuart Katz

Custom Sku: 37127

$23.45

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1281, 3¢ Pair With Down The Middle Misperforation Error Mint NH * Stuart Katz

$28.20

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1846, RARE MISPERFORATION ERROR PAIR - 3¢ HENRY CLAY

$24.91

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1904a, Mint NH Miscut Coil Pair Error - Stuart Katz

Custom Sku: 39445

$23.45

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2112a, Mint NH 23¢ - Imperforate Error Pair With Normal - Stuart Katz

Custom Sku: 40125

$23.50

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1894 Variety, Mint NH 20¢ Flag With Blue Stars ERROR - Stuart Katz

Custom Sku: SK-26215

$23.50

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C92a, Mint NH 31¢ MAJOR Color Shift Error Pair - Stuart Katz

Custom Sku: 35883

$28.20

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2412, MNH 25¢ Stamp With Scarce Gold Color Shift ERROR & Normal - Stuart Katz

$28.20

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1726 Misperforated ERROR Pair - 13¢ Bicentennial - Mint NH - Stuart Katz

Custom Sku: SK-05354

$28.20

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1753, MNH 13¢ Large Misperf Showing Gutter Freak Error - Stuart Katz

Custom Sku: SK-32108

$23.49

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1323, Mint NH 5¢ Misperfed Error - Right Down The Middle * Stuart Katz

Custom Sku: 35566

$23.50

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1333, Mint NH 5¢ Scarce Misperfed Error Pair - Better Cities - Stuart Katz

Custom Sku: SK-28166

$26.27

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1822, Misperf Error 15¢ Block of Four Stamps With Normal Mint NH -- Stuart Katz

Custom Sku: SK-27397

$23.50

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1608, Mint NH 50¢ Large Misperforation Error Stamp - Stuart Katz

Custom Sku: SK-25284

$28.20

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1035, Mint NH 3¢ HUGE Misperfed Error Block of Four * Stuart Katz

Custom Sku: 38909

$23.45

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1756, Mint NH 15¢ HUGE Misperforation Error George Cohan - Stuart Katz

Custom Sku: SK-21873

$26.27

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1142, MNH 4¢ Sensational Perf Shift Error Pair - Stuart Katz

Custom Sku: SK-33586

$28.15

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2041, Mint NH 20¢ Misperfed Error Brooklyn Bridge Stamp * Stuart Katz

Custom Sku: 35604

$23.45

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1356, Mint NH 6¢ Outrageous Green Color Shift Freak Error * Stuart Katz

Custom Sku: SK-30230

$23.50

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C81, Mint NH 21¢ - Large Color Shift Error - Airmail Stamp - Stuart Katz

Custom Sku: 39511

$23.50

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1789, Dramatic Color Shift Error With Normal Stamp Mint NH - Stuart Katz

$23.50

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1485, Mint NH 8¢ Misperfed Error Pair Robinson Jeffers - Stuart Katz

Custom Sku: SK-26042

$28.20

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1690, 13¢ Fantastic Large Color Shift Error With Normal * Stuart Katz

$28.20

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1758, MNH 15¢ Perfs Shifted Freaky Error With PL# ** Stuart Katz

Custom Sku: SK-31510

$28.15

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1237, Mint NH 5¢ Misperforation Error With Normal * Stuart Katz

Custom Sku: 35668

$23.50

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1436, Mint NH 8¢ Emily Dickinson Color Shift ERROR With Normal -- Stuart Katz

$23.50

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1557, Mint NH 10¢ Black Color Shift Right Freak Error - Stuart Katz

Custom Sku: SK-30528

$28.20

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1615Ce, Mint VF NH 8.4¢ Imperforate Between Error - Stuart Katz

Custom Sku: 34746

$23.50

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1608, Mint NH 50¢ Dramatic Black Color Shift Error Margin Copy - Stuart Katz

Custom Sku: SK-34064

$28.20

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1455, Mint NH 8¢ Nice Black Color Shift Error Strip of Five Stamps - Stuart Katz

Custom Sku: SK-28333

$28.20

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2010, Mint NH 20¢ Misperforation Error Pair * Stuart Katz

Custom Sku: 35674

$28.20

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1473, MNH 8¢ - Spectacular Color Shift Error Plate Block - Stuart Katz

Custom Sku: 40307

$517.00

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1841a, Mint NH 15¢ - BIG Misperf Shift Error Block W/Normal - Stuart Katz

Custom Sku: 39732

$23.45

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1473, MNH 8¢ - Spectacular Perforation Shift Error Plate Block - Stuart Katz

Custom Sku: 40308

$329.00

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730-31, MNH VF WHOLESALE - 10 X Sets Souvenir Sheets SCV $400.00 * Stuart Katz

Custom Sku: 40262

$159.95

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1529, MNH 10¢ - Spectacular Color Shift Error Plate Block - Stuart Katz

Custom Sku: 40306

$376.00

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751, MNH VF WHOLESALE - 19 X Souvenir Sheets SCV $265.00 * Stuart Katz

Custom Sku: 40259

$115.00

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1557, MNH 10¢ - Large Red Color Shift Error Plate Block -- Stuart Katz

Custom Sku: 40312

$235.00

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1474, MNH 10¢ - Spectacular Color Shift Error Plate Block - Stuart Katz

Custom Sku: 40315

$282.00

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1555, MNH 10¢ - Spectacular Color Shift Error Plate Block - Stuart Katz

Custom Sku: 40309

$329.00

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751, MLH VF WHOLESALE - 6 X Souvenir Sheets SCV $60.00 * Stuart Katz

Custom Sku: 40260

$25.00

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1557, MNH 10¢ - Large Red Color Shift Error Plate Block - Stuart Katz

Custom Sku: 40311

$235.00

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C90, MNH 31¢ - Spectacular Perforation Shift Error Plate Block of 6 Stuart Katz

Custom Sku: 40310

$465.30

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634, Mint NH 2¢ - Misperforated Error Block of Four - Stuart Katz

Custom Sku: 40063

$18.75

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Sunflower Bouquet Sheet of Twenty 2 Ounce Current Rate Stamps Scott 5682

Custom Sku: 40340

$25.27

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2281i, 25¢ Pair With Black Litho Color Omitted Error * Stuart Katz

Custom Sku: 39537

$70.50

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1903b, Mint NH 9.3¢ - Imperforate PL# 1 In Strip of Six SCV $1250 * Stuart Katz

Custom Sku: 40217

$799.00

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1455, Mint NH 8¢ - Very Dramatic Orange Color Shift Error - Stuart Katz

Custom Sku: 39922

$47.00

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571, Mint VF NH $1 Plate Block of Six Stamps Cat $525.00 - Stuart Katz

Custom Sku: 39965

$350.00

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2238c, Mint NH 22¢ - Black Color Omitted Error Block SCV $275 * Stuart Katz

Custom Sku: 39937

$177.66

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R90a, Used XF $5 Manifest - With PFC Certificate - Stuart Katz

Custom Sku: 39973

$250.00

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2428, Mint NH 25¢ - Large Misperf Error Block Shows Gutter - Stuart Katz

Custom Sku: 39924

$93.06

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1409, Mint NH 6¢ - Unbelievable Color Shift ERROR Plate Block - Stuart Katz

Custom Sku: 39908

$183.30

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3257a, Mint XF NH - Black Litho Color Omitted Error Plate Block * Stuart Katz

Custom Sku: 39944

$376.00

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1460, Mint NH 6¢ - Very Dramatic Green Color Shift Error Zip Block - Stuart Katz

Custom Sku: 39923

$112.80

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1433, Mint NH 8¢ - Very Dramatic Color Shift Error Pair - Stuart Katz

Custom Sku: 39912

$93.06

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3066a, Mint NH 50¢ - Black Color Omitted Error Plate Block - Stuart Katz

Custom Sku: 39934

$164.50

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1436, Mint NH 8¢ - Unbelievable Color Shift ERROR Zip Block - Stuart Katz

Custom Sku: 39906

$282.00

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1690a, Mint NH 13¢ - Light Blue Color Omitted Major Error SCV $200 - Stuart Katz

Custom Sku: 39913

$93.06

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1379a, MNH 6¢ - Unbelievable Yellow Color Shift ERROR Block - Stuart Katz

Custom Sku: 39910

$235.00

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E5, Used 10¢ XF - Special Delivery Stamp -- Stuart Katz

Custom Sku: 39863

$50.00

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K10, Used 20¢ VF - Shanghai Stamp SCV $140 - Stuart Katz

Custom Sku: 39882

$75.00

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E8, Used 10¢ XF/Superb JUMBO - Special Delivery Stamp * Stuart Katz

Custom Sku: 39868

$45.00

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

Custom Sku: 39978

$25.00

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JQ5, Used 25¢ Superb - Special Handling Stamp ** Stuart Katz

Custom Sku: 39877

$40.00

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E5, Used 10¢ XF - Special Delivery Stamp - Stuart Katz

Custom Sku: 39862

$25.00

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Q10, Used 50¢ VF - Parcel Post Stamp * Stuart Katz

Custom Sku: 39873

$25.00

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E8, Used 10¢ Superb - Special Delivery Stamp * Stuart Katz

Custom Sku: 39867

$59.00

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C19, Mint XF+ NH 6¢ Airmail Stamp - Pretty! * Stuart Katz

Custom Sku: 39160

$30.00

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E7, Mint XF NH 10¢ - With PSAG Certificate - Stuart Katz

Custom Sku: 39626

$225.00

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1171, Mint Superb NH 4¢ - PSE Graded 98 Certificate - Stuart Katz

Custom Sku: 39755

$50.00

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"Mexican" Figure With Sombrero Fancy Cancel Registered Cover - Stuart Katz

Custom Sku: SK-22870-A

$113.75

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1161, Mint Superb NH 4¢ - PSE Graded 98 Certificate - Stuart Katz

Custom Sku: 39751

$50.00

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995, Mint Superb NH 3¢ - PSE Graded 98 Certificate - Stuart Katz

Custom Sku: 39777

$60.00

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698, Mint XF/Superb 20¢ - With Graded 95 PSE Certificate - Stuart Katz

Custom Sku: 39736

$175.00

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315, Mint NH 5¢ Imperf - Superb GEM Margin Pair - Stuart Katz

Custom Sku: 39733

$1,400.00

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Sandy Hook Lighthouse Sheet of One Hundred 29 Cent Postage Stamps 1605

Custom Sku: 399639

$59.95

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Pioneers of American Industrial Design Sheet 12 Current Rate Stamps 4546

Custom Sku: 39942

$12.11

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1126, Mint NH 8¢ - Misperforation Error Pair - Stuart Katz

Custom Sku: 39471-AA

$15.04

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Andrew Wyeth Full Sheet of 12 Current Rate Stamps Scott 5212a

Custom Sku: 39903

$20.57

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2517a, Mint XF NH 29¢ - Imperforate Pair Error - Stuart Katz

Custom Sku: 39580

$747.30

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