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1705, Color Shift ERROR Zip Block of Six 13¢ Stamps MNH - Stuart Katz

$211.50

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2411, Large Misperfed ERROR Plate Block of Four 25¢ Stamps MNH - Stuart Katz

$79.90

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806, Five Misperforation ERROR Plate Blocks 2¢ Prexie Stamps - Stuart Katz

$258.50

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1731, Misperforation ERROR Shift Complete Sheet of 50 Stamps - Stuart Katz

$423.00

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1478 Var, Red Color Missing from Top Stamp & Color Shift ERROR - Stuart Katz

$1,410.00

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R74a, Superb Gem Passage Ticket Revenue Stamp Cat $350.00 - Stuart Katz

$275.00

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483, Mint XF NH 3¢ Plate Block of Six Stamps Cat $200.00 - Stuart Katz

$140.00

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2401 Variety, Montana 25¢ Unused Imperforate Pair ERROR (PW) - Stuart Katz

$329.00

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1281, Major Misperforation ERROR Plate Block With PL# Captured - Stuart Katz

$79.90

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2550a, MNH 29¢ Cole Porter Imperforate Between Zip Block ERROR - Stuart Katz

$658.00

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3123c, 32¢ Swans RARE Complete Imperforate Booklet Pane ERROR - Stuart Katz

$893.00

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3632b, Mint NH 37¢ Imperforate Coil Strip of Six Stamps - Stuart Katz

$423.00

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1772, MNH 15¢ IYC Block of 6 With DOUBLE Perforations ERROR - Stuart Katz

$164.50

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1286, Mint NH Huge ERROR Pair With Tape Splice With Normal - Stuart Katz

$47.00

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1951c, Mint NH 20¢ Love Blue Color Omitted Scarce ERROR - Stuart Katz

$150.40

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2718aPb, MNH XF Imperforate Pane of Four Stamps Proof Cat $1000.00 - Stuart Katz

$352.50

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2476, Mint NH 1¢ Large Misperforation ERROR Block of Four Plus! - Stuart Katz

$70.50

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2646aPi, MNH XF Imperforate Pane of Five Bird Stamps Proof - Stuart Katz

$423.00

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2788aP, MNH XF Imperforate Block of Four Proof Cat $400.00 - Stuart Katz

$305.50

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2039a, MNH 20¢ Volunteer Lend a Hand Imperforate Pair ERROR - Stuart Katz

$399.50

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2904c, XF Mint NH Nonprofit Org Imperforate Coil Pair ERROR - Stuart Katz

$183.30

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1833a, XF MNH 15¢ Learning Imperforate Between Pair ERROR - Stuart Katz

$112.80

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2044a, Mint NH 20¢ Scott Joplin Imperforate ERROR Pair - Stuart Katz

$272.60

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1934a, XF MNH 18¢ Remington Imperforate Between Pair ERROR - Stuart Katz

$112.80

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1826a, Mint NH 15¢ Intaglio Colors Omitted MAJOR ERROR - Stuart Katz

$423.00

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1206, Mint NH 4¢ Education BIG Black Color Shift ERROR Pair - Stuart Katz

$70.50

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1789Ad, MNH 15¢ Imperforate Between Block of Six Stamps ERROR - Stuart Katz

$164.50

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1288Bc, Rare Error Booklet of 3 Misperforated Panes 15¢ Oliver Wendall Holmes

$37.60

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1557, Mint NH 10¢ Mariner Space Black Color Shifted Right ERROR - Stuart Katz

$37.60

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720b, Mint VF NH Booklet Pane of Six Stamps Cat $60.00 - Stuart Katz

$35.00

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1869e, 50¢ Nimitz Perf 11.2 Shiny Gum Sheet of 100 Stamps CV $625. - Stuart Katz

Réf.: SK-10560

$400.00

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328, Mint OG NH 1¢ Jamestown Block Of Four Stamps Cat $260.00 - Stuart Katz

$75.00

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1869a, Nimitz Complete Sheet of 100 50 Cent Stamps CV $600. - Stuart Katz

Réf.: SK-10532

$400.00

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RW75, $15.00 Northern Pintails Federal Duck Stamp VF OG NH - Stuart Katz

Réf.: rw75

$32.50

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1920's Postage Production Test Block of 16 Stamps - Stuart Katz

$300.00

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TDB48, 1980's Test Booklet Complete Unexploded Cat $900.00 Stuart Katz

$500.00

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RW76, $15.00 Long-tailed Duck Stamp VF OG NH - LOW PRICE! - Stuart Katz

Réf.: rw76

$30.95

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319g, Mint XF OG NH Gem 2¢ Booklet Pane of Six Stamps - Stuart Katz

$400.00

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Jimmy Stewart Legends of Hollywood Sheet Of 20 Stamps 41 Cent Stamps Scott 4197

Réf.: SK-10274

$14.95

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1800, 15c TWO DIFFERENT STAMPS WITH COLORS OMITTED - Possibly printers waste

$329.14

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526, Mint 2¢ VF-XF NH Side Plate Block of Six Stamps Cat $450.00 - Stuart Katz

$275.00

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RW61, $15.00 Red-Breasted Merganser Duck Stamp VF OG NH - Stuart Katz

Réf.: rw61

$19.95

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411, Mint VF NH Pair, Paste-up Pair and Single Stamp Cat $132.50 - Stuart Katz

$65.00

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TDB91a, Black For Testing Purposes Only Pane Of Eighteen Stamps - Stuart Katz

Réf.: SK-09927

$14.95

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497, Mint NH Pair & Mint LH Single Plus Used Stamp Cat $120.00 - Stuart Katz

$50.00

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1443a, Mint NH Massive Misperforation ERROR Block of Four Stamps - Stuart Katz

$51.70

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1443a, MNH Color Shift ERRORS - Two Diff Blocks of Four Stamps - Stuart Katz

$56.40

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410, Mint VF NH Pair, Paste-up Pair and Single Stamp Cat $78.00+ - Stuart Katz

$45.00

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