United States

2579, MNH 29¢ Diagonal Misperf Freak Error Sheet of 50 Stamps - Stuart Katz

Custom Sku: SK-29422

$935.30

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1926, MNH 18¢ Black Color Shifted UP Freaky Error Sheet of 50 - Stuart Katz

Custom Sku: SK-29327

$705.00

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1894d, MNH 20¢ Black Color Omitted Error In Freaky Sheet of 100 - Stuart Katz

Custom Sku: SK-29322

$371.30

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1391, MNH 6¢ Colors Shifted Down Freak Error Sheet of 50 Stamps - Stuart Katz

Custom Sku: SK-29433

$465.30

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566, Mint NH VF 15¢ Statue of Liberty Block of Four - Stuart Katz

Custom Sku: SK-28886

$95.00

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Dummy Testing Stamps Full Roll of 3000 Stamps - Stuart Katz

Custom Sku: SK-28813

$211.50

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484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! - Stuart Katz

Custom Sku: SK-28903

$75.00

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1335, MNH 99% of Gold Color Missing Error With Normal Stamp - Stuart Katz

Custom Sku: SK-28852

$37.55

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484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! -***- Stuart Katz

Custom Sku: SK-28907

$75.00

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484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! -- Stuart Katz

Custom Sku: SK-28904

$75.00

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575, Mint 1¢ XF NH Plate Block of Six - Stuart Katz

Custom Sku: SK-28919

$85.00

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572, Mint NH F/VF $2 Capital PO FRESH Vertical Pair CV $240 - Stuart Katz

Custom Sku: SK-28862

$140.00

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557, Mint NH VF 5¢ Roosevelt Block of Four -**- Stuart Katz

Custom Sku: SK-28883

$99.00

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702, Mint NH Red Cross Shifted Up Into Design Plate Block Error - Stuart Katz

Custom Sku: SK-28866

$446.50

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2339 Var, Mint NH 22¢ Odd Inking Error With Normal -*- Stuart Katz

Custom Sku: SK-28848

$93.06

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1375, MNH 6¢ Multiple Colors Shifted Down Error REMARKABLE! - Stuart Katz

Custom Sku: SK-28856

$79.90

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570, Mint NH F/VF 50¢ PO FRESH Block of Four CV $280 — Stuart Katz

Custom Sku: SK-28860

$195.00

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384V, Mint H Paste-Up Strip With PL# 5660 Under Tab - Stuart Katz

Custom Sku: SK-28841

$95.00

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1555 Var, MNH Reverse Printing Under Gum Error - Stuart Katz

Custom Sku: SK-28842

$37.55

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242, Used $2 Columbian Lightly Canceled and Sound! - Stuart Katz

Custom Sku: SK-28838

$395.00

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572, Mint NH $2 Capital PO FRESH Block of Four CV $480+ -- Stuart Katz

Custom Sku: SK-28865

$250.00

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1818, Mint NH "B 18¢" Pair With Full Gutter Between Error - Stuart Katz

Custom Sku: SK-28285

$258.50

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1354a, MNH 6¢ Misperfed Error Strip of 20 Flag Stamps - Stuart Katz

Custom Sku: SK-28483

$465.30

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1541a, MNH 10¢ Reverse Offset Printed Under Gum Error Plate Block - Stuart Katz

Custom Sku: SK-28485

$89.30

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1926, Mint VF NH Scarce Color Shift Error Sheet of Fifty Stamps - Stuart Katz

Custom Sku: SK-28479

$235.00

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Columbia River Gorge $22.95 Express Mail Plate Block of Four Stamps Scott 5041

Custom Sku: 5041pb

$249.95

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X-Planes $14.40 Express Mail Plate Block of 4 Postage Stamps Scott 4019

Custom Sku: 4019pb

$119.95

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1331-32a Red Omitted from Capsule on Center Stamp ERROR Cat $200. - Stuart Katz

Custom Sku: SK-05670

$84.55

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499, Mint NH 2¢ Amazing Perforation Shift Block of Four Error - Stuart Katz

Custom Sku: SK-28383

$47.00

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1769a, Mint VF NH 15¢ Imperforate Pair Error - Stuart Katz

Custom Sku: SK-28359

$56.40

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1726, Mint NH 13¢ Misperfed Error Zip Block of Four - Stuart Katz

Custom Sku: SK-28191

$42.30

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C83a, Mint VF NH 13¢ Imperforate Pair Error - Stuart Katz

Custom Sku: SK-28374

$47.00

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525c, Mint OG 1¢ Imperforate Between Pair Error CV $750.00 - Stuart Katz

Custom Sku: SK-28378

$329.00

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1720a, Mint NH 13¢ Diagonal Misperfed Error Block of 4 Stamps - Stuart Katz

Custom Sku: SK-28404

$89.30

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1140, Mint NH 4¢ Misperfed Plate Block Error - Very Scarce - READ - Stuart Katz

Custom Sku: SK-28391

$47.00

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1866, MNH 37¢ Misperfed & Pre Printing Paper Fold Block Error - Stuart Katz

Custom Sku: SK-28197

$277.30

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C16, Mint NH Superb GEM 5¢ With PSAG Graded 100 Certificate - Stuart Katz

Custom Sku: SK-28219

$1,450.00

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1844, Mint NH 1¢ Misperfed Error Zip Block of Eight Stamps - Stuart Katz

Custom Sku: SK-28403

$188.00

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1433, Mint NH 8¢ Amazing Color Shift Error HOLY COW! - Stuart Katz

Custom Sku: SK-28381

$70.50

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1711, Mint NH 13¢ Misperfed Error (Misplaced Pins) Block - Stuart Katz

Custom Sku: SK-28196

$89.30

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1879a, Mint NH 18¢ Misperfed Error Block of Four - Roses - Stuart Katz

Custom Sku: SK-28187

$37.55

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C20, Mint NH Superb GEM 25¢ With PSAG Graded 100 Certificate * Stuart Katz

Custom Sku: SK-28216

$500.00

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390, Used Superb 1¢ Coil With PSAG Graded 98J Certificate - Stuart Katz

Custom Sku: SK-28204

$495.00

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C22, Mint NH Superb GEM 50¢ With PSAG Graded 100 Certificate - Stuart Katz

Custom Sku: SK-28198

$750.00

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390, Used 1¢ Coil Pair Superb With PSAG Graded 98 Certificate - Stuart Katz

Custom Sku: SK-28206

$675.00

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1683, Mint NH 13¢ Looks Like Double Impression Error (Tag Shift) - Stuart Katz

Custom Sku: SK-28195

$89.30

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2283B, Red Color Removed From Sky Error - Complete Booklet of Two Panes

Custom Sku: SK-28186

$79.90

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2579, Mint NH 29¢ Misperfed - RARE Block of Six Stamps Error - Stuart Katz

Custom Sku: SK-28393

$70.50

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2515, Mint NH 25¢ Misperfed Error - Plate Block of 4 Shows Gutter - Stuart Katz

Custom Sku: SK-28396

$117.50

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1058a, Mint NH 4¢ Lincoln Imperforate Pair Error - Stuart Katz

Custom Sku: SK-28362

$47.00

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1381, Mint NH 6¢ HUGE Color Shift Error Block With Normal - Stuart Katz

Custom Sku: SK-28184

$235.00

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R6c, Pre Printing Paper Fold Error Group of 30 Stamps - WoW Stuart Katz

Custom Sku: SK-28350

$841.30

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1432, Mint NH 8¢ Unbelievable Color Shift Error Block With Normal - Stuart Katz

Custom Sku: SK-28172

$112.80

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1335, Mint NH 5¢ Scarce Misperfed Error Pair - Eakins - Stuart Katz

Custom Sku: SK-28169

$37.55

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1467a, MNH 8¢ Color Shift Error Sheet of 32 Stamps - Stuart Katz

Custom Sku: SK-28342

$140.06

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2421a, MNH 25¢ Bill of Rights Black Color Omitted ERROR Plate Block Stuart Katz

Custom Sku: SK-28357

$653.30

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807, Mint NH 3¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz

Custom Sku: SK-28341

$140.06

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804, Mint NH 1¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz

Custom Sku: SK-28340

$140.06

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1731, Mint NH 13¢ Misperfed Error Plate Block of Four PL# Captured - Stuart Katz

Custom Sku: SK-28181

$56.40

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2440a, 25¢ Love Imperforate Pair ERROR - VF NH - Stuart Katz

Custom Sku: SK-27365

$423.00

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1384b, XF NH Imperforate Error Pair - VERY RARE! - Stuart Katz

Custom Sku: SK-27367

$517.00

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1542a, DULL Black Litho Colro Omitted MAJOR ERROR With Normal

Custom Sku: SK-27366

$423.00

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2444a, Mint VF NH 25¢ Black Color Omitted Error With Normal -- Stuart Katz

Custom Sku: SK-27364

$653.30

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J88, Full Mint Sheet of 100 Postage Due Stamps PL# 26660 - Stuart Katz

Custom Sku: SK-13513

$89.95

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989, Mint NH 3¢ Stunning Misperforated ERROR Pair - RARE! - Stuart Katz

Custom Sku: SK-26230

$47.00

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1895, Mint NH Large Miscut Error Coil Pair - Stuart Katz

Custom Sku: SK-26224

$37.60

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1895, Mint NH Large Miscut Error Coil - Stuart Katz

Custom Sku: SK-26225

$18.75

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American Bison of Twenty 21 Cent Postage Stamps Scott 3468

Custom Sku: 3468

$16.95

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95, Used 5¢ Very Nice Sound Rare Stamp Cat $850.00 - Stuart Katz

Custom Sku: SK-26219

$295.00

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

Custom Sku: SK-25602

$189.00

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Winslow Homer Complete Sheet of Fifty 4 Cent Postage Stamps Scott 1207

Custom Sku: 1207

$12.95

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C1, Mint NH VF 6¢ Airmail Stamp Nicely Centered! - Stuart Katz

Custom Sku: SK-25561

$75.00

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612, Mint NH Scarce Plate Block of Four Stamps Cat $500.00 - Stuart Katz

Custom Sku: SK-25600

$275.00

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RW71A, $15 Redheads DUCK Stamp Self-Adhesive Pane - Stuart Katz

Custom Sku: rw71a

$25.00

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WS7b, Mint NH Booklet Pane of Ten Stamps - Stuart Katz

Custom Sku: SK-25608

$45.00

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Wedding Cake Sheet of Twenty 2 Ounce Current Rate Stamps Scott 5000

Custom Sku: 5000sht

$79.79

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Wedding Cake Sheet of 20 U.S. Postage 65 Cent Stamps Scott 4602

Custom Sku: SK-21036

$59.88

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Jackie Robinson Baseball Player Sheet of Fifty 20 Cent Postage Stamps Scott 2016

Custom Sku: 2016sht

$24.95

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3784Ae, Mint NH 37¢ Imperforate Plate Block of 4 MAJOR ERROR! -- Stuart Katz

Custom Sku: SK-24878

$258.50

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1526, 10¢ Large Misperforation Error Plate Block Robert Frost - Stuart Katz

Custom Sku: SK-24842

$117.50

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1115, 4¢ Lincoln Large Misperforation Error Pair Mint NH - Stuart Katz

Custom Sku: SK-24847

$37.60

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2704, Mint NH 29¢ Block With Misplaced Perfs Error WoW Mint NH - Stuart Katz

Custom Sku: SK-24849

$141.00

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1476 Var, Mint NH With Blue Color Missing Error With Normal - Stuart Katz

Custom Sku: SK-24832

$376.00

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R171p, Mint VF LH/LH RARE Block of Four Cat $350.00+ - Stuart Katz

Custom Sku: SK-24871

$250.00

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2419, $2.40 1989 Priority Mail Full Sheet of 20 Stamps CV $150.00 - Stuart Katz

Custom Sku: SK-07640

$60.00

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3635c, 37¢ Misperforated ERROR Booklet Pane of 20 * Stuart Katz

Custom Sku: SK-15511

$37.60

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Fly in Black Three Strikes Fancy Cancel Registered Cover RARE! - Stuart Katz

Custom Sku: SK-24261

$487.50

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C92c, Black Intaglio Color Omitted Transitional Block With PSE Cert Stuart Katz

$1,175.00

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Hearts 2 Different Strong Strikes Fancy Cancel Registered Cover - Stuart Katz

Custom Sku: SK-24267

$191.75

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Settlement of Florida Sheet of Fifty 5 Cent Postage Stamps Scott 1271

Custom Sku: 1271

$14.95

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Emily Dickinson Sheet of Fifty 8 Cent Postage Stamps Scott 1436

Custom Sku: 1436

$19.95

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John Sloan Sheet of Fifty 6 Cent Postage Stamps Scott 1433

Custom Sku: 1433

$12.95

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Nevada Statehood Sheet of Fifty 5 Cent Postage Stamps Scott 1248

Custom Sku: 1248

$14.95

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Daniel Boone Sheet of Fifty 6 Cent Postage Stamps Scott 1357

Custom Sku: 1357

$14.00

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Santa and Children Sheet of Fifty 32 Cent Postage Stamps Scott 3004-07

Custom Sku: 3004-07

$29.95

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Eid Ramadan Pane of Twenty 41 Cent Postage Stamps Scott 4202

Custom Sku: 4202

$11.95

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