United States

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1868, Mint NH 40¢ Diagonal Misperf Error Block of Four Stamps - Stuart Katz
SK-28298
$56.40
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1474, MNH 8¢ Magnificent Black Color Shift Error With Normal - Stuart Katz
SK-28940
$611.00
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320A, Mint Superb NH 2¢ Type II Pair - Stuart Katz
SK-28977
$350.00
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1507, MNH 8¢ Misperforated Error Top PL# Block of 14 - Stuart Katz
SK-28943
$70.50
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484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! -**- Stuart Katz
SK-28906
$75.00
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1485a, MNH 8¢ Imperforate Between Error PL# Block of 6 Pairs - Stuart Katz
SK-28945
$705.00
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1560, MNH 10¢ Misperforated Error Plate Block of 10 Stamps - Stuart Katz
SK-28964
$141.00
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1541a, Mint NH 10¢ Large Misperfed Error Block - Minerals -- Stuart Katz
SK-29007
$117.50
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1394, MNH 8¢ FULL Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29128
$46.95
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1338, MNH Strip FULL Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29125
$93.95
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1364, MNH 6¢ Partial Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29126
$46.95
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1381, MNH 6¢ Partial Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29119
$70.50
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1474, MNH 8¢ Terrific Black Color Shift Error With Normal - WoW - Stuart Katz
SK-28939
$140.06
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1126, MNH 8¢ FULL Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29123
$70.50
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1463, MNH 8¢ Partial Reverse Printing Under Gum Freak EFO Error * Stuart Katz
SK-29117
$70.50
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Charlie Brown Booklet Pane of 20 First Class Stamps Scott 5030a - Stuart Katz
SK-5030
$46.39
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Bethesda Fountain $25.50 Express Mail Sheet of 4 Postage Stamps Scott 5348
5348sht
$495.00
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Christmas Holiday Virgin & Child Booklet of 20 First Class Stamps Scott 4815b
4815b
$32.44
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4019, 2006 $14.40 X-15 Plane Priority Mail Pane of 20 Stamps - Stuart Katz
SK-08828
$450.00
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1548, Mint NH 10¢ Terrific Reverse Printing Under Gum Error - Stuart Katz
SK-29073
$89.30
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1525, MNH 10¢ Misperf Shift Freaky Error Sheet of 50 Stamps - Stuart Katz
SK-29246
$653.30
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1569-70a, Mint NH 10¢ Fold Over Freaky Error Space Block - Stuart Katz
SK-29248
$183.30
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1338, MNH 8¢ Over Inking Freaky Error Sheet of 100 Stamps - Stuart Katz
SK-29239
$281.06
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1564, MNH 10¢ Misperf Shift Freaky Error Sheet of 40 Stamps - Stuart Katz
SK-29250
$328.06
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1126, Used 8¢ Misperf Shift Freaky Error Sheet of 72 Stamps - Stuart Katz
SK-29241
$371.30
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1444, MNH 8¢ Misperfed And Tape Splice Freaky Error Sheet of 50 - Stuart Katz
SK-29235
$705.00
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1118, MNH 8¢ Misperf Shift Freaky Error Sheet of 72 Stamps - Stuart Katz
SK-29240
$559.30
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1690, Mint NH 13¢ Terrific Partial Reverse Printing Under Gum Error Stuart Katz
SK-29076
$70.50
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1556, Mint NH 10¢ Terrific Partial Reverse Printing Under Gum Error Stuart Katz
SK-29074
$47.00
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1705, Mint NH 13¢ Terrific Reverse Printing Under Gum Error - Stuart Katz
SK-29077
$70.50
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2540b, Mint NH $2.90 Black Color Omitted Error With Normal - Stuart Katz
SK-29039
$371.30
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Pacific 97 Testing Sheet of 40 Stamps With Fold Over Error - Stuart Katz
SK-29025
$234.95
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1280 Var, Mint NH 2¢ Fold Over Error Created FULL GUTTER PAIR - Stuart Katz
SK-29023
$705.00
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1551, Mint NH 13¢ Misperfed Freaky Sheet of 50 Error Stamps - Stuart Katz
SK-29033
$935.30
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1033, Mint NH 2¢ Remarkable Freak Block of Stamps UNIQUE ERROR - Stuart Katz
SK-29030
$1,875.30
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1856 Var, MNH 14¢ Misperfed Strip of Ten Stamps With Gutter Between Stuart Katz
SK-29029
$164.50
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2723A, Scarce 11.2 X 11.5 Perforations Complete Sheet of 40 - Stuart Katz
SK-29021
$225.60
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1578a, Mint NH 10¢ Sensational Color Shift Error Plate Block - Stuart Katz
SK-29002
$117.50
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2092, Mint NH 20¢ Wetlands Ducks - Margin Copy Error - Stuart Katz
SK-28824
$37.55
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219-29P4, XF Set of Card Proofs Includes 219D - Very Fresh Colors -- Stuart Katz
SK-28833
$550.00
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637, Mint LH/NH 5¢ - Large Misperforation Error Block of Four * Stuart Katz
SK-28827
$56.40
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677, Mint NH VF 8¢ Nebr Plate Block of Four CV $550.00 * Stuart Katz
SK-28832
$399.00
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663, Mint NH VF 5¢ Kans Plate Block of Four CV $650.00 * Stuart Katz
SK-28831
$399.00
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1505, Mint NH 10¢ Unbelievable Black Color Shift Error Plate Block - Stuart Katz
SK-29000
$282.00
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1578a, Mint NH 10¢ Sensational Color Shift Error Plate Block -- Stuart Katz
SK-29003
$141.00
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290, Used 10¢ XF/Superb Gem Quality Stamp - Stuart Katz
SK-28815
$125.00
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1555a, Mint NH 10¢ Brown Color Omitted Error - RARE Plate Block - Stuart Katz
SK-28998
$1,316.00
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1578a, Mint NH 10¢ Massive Color Shift Error Pair - Fantastic! - Stuart Katz
SK-28991
$47.00
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1578a, Mint NH 10¢ Massive Color Shift Error Pair - Very Cool! - Stuart Katz
SK-28990
$47.00
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1576, Mint OG 10¢ Misperforated Error Plate Block of 25 Stamps - Stuart Katz
SK-29013
$70.50
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267, Mint HR 2¢ - Large Misperforation Error Block of Four * Stuart Katz
SK-28828
$117.50
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1547, Mint NH 10¢ Nice Color Shift Error In Sheet of 50 Stamps - Stuart Katz
SK-29017
$141.00
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2074, 20¢ Hard to Find Misperfed Error Stamp Mint NH - Stuart Katz
SK-27420
$28.15
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C84-C100, 1972-1980 Airmail Commemorative Set of 18 MNH Stamps - Stuart Katz
1972-80
$19.95
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910a, Mint NH Double Impression of Czechoslovakia Error - RARE - Stuart Katz
SK-28792
$400.00
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2518a, MNH VF Imperforate PL# 1111 Error Strip of 10 Stamps CV $275 Stuart Katz
SK-28787
$211.50
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50 X SETS - Scott 909-21, 1943-44 Overrun Countries Issues Set of 13 Mint NH
SK-28835
$75.00
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1726b-c, MNH 13¢ Strip of 5 Containing Both Color Omitted Errors - Stuart Katz
SK-28649
$611.00
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2022a, Mint NH 20¢ Misperforated Error Block of Four - Red at Top - Stuart Katz
SK-28512
$37.60
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2440 Var, Miscut 25¢ Love Sheet Creates Five Color Omitted Stamps - Stuart Katz
SK-28671
$1,875.30
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2114, MNH 22¢ Miscut Error Pane Makes for 10 Full Gutter Pairs - Stuart Katz
SK-28647
$2,350.00
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1355a, Mint NH Zip Block With Ochre Color Omitted RARE Error - Stuart Katz
SK-28637
$1,175.00
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2369, MNH 22¢ Nice Color Shift Error With Normal stamp Too! - Stuart Katz
SK-28716
$18.79
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368, Mint Superb NH 2¢ Imperforate Block of Four - Stuart Katz
SK-28743
$89.00
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2500a, MNH 25¢ Diagonal Misperf Error Complete Sheet - AMAZING! - Stuart Katz
SK-28677
$893.00
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1742a, MNH 15¢ Two Way Misperf Shift Errors In Complete Booklet - Stuart Katz
SK-28640
$234.06
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486, Mint XF NH Coil Line Strip of Four Stamps - GEM -- Stuart Katz
SK-28764
$55.00
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219-29P4, XF Set of Card Proofs Includes 219D - Very Fresh Colors - Stuart Katz
SK-28636
$595.00
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1483a Var, Black Litho Color Almost Completely Omitted With PFC - Stuart Katz
SK-28767
$141.00
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1578a, Mint NH 10¢ Color Shift ERROR Pair Banking Commerce - Stuart Katz
SK-27381
$23.50
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C87, MNH 18¢ TWO Different Color Shift ERRORS - Airmail Stamps - Stuart Katz
SK-28706
$61.10
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1716, MNH 13¢ Perf Shift Error Sheet of 40 Stamps - Scarce! - Stuart Katz
SK-28585
$164.50
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1709a, MNH 13¢ Perforation Shift Error Sheet of 40 Stamps - Stuart Katz
SK-28583
$470.00
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1690, MNH 13¢ Brown Color Shift Error Sheet of 50 Stamps - Scarce! - Stuart Katz
SK-28586
$940.00
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2110, Misperfed Error 22¢ Stamp Jerome Kern Mint NH - Stuart Katz
SK-27404
$18.75
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William H Johnson American Treasures Sheet 20 Current Rate Stamps Scott 4653
SK-4653
$27.79
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Love Issue Full Sheet of 50 - 20 Cent Postage Stamps Scott 2072
2072
$25.95
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Baltimore Checkerspot Butterfly Sheet of Twenty 65 Cent Stamps Scott 4603
4603
$59.95
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Peace Garden Sheet of Fifty 20 Cent Postage Stamps Scott 2014
2014
$17.95
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1622a, MNH 13¢ Imperforate Between PL# Block of 10 Stamps -- Stuart Katz
SK-27888
$131.60
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Hawaii Statehood Full Sheet of Fifty 7 Cent Airmail Postage Stamps Scott C55
C55
$22.95
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640, Mint OG 8¢ RARE Printers Waste Strip of Three Stamps - Stuart Katz
SK-27733
$47.00
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C78, Mint NH 11¢ Misperfed Error Margin Block of Four Airmail Stamps Stuart Katz
SK-28112
$89.30
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1731, 13¢ Misperfed Error Pair With Normal Mint NH - Stuart Katz
SK-27456
$18.75
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C127, Mint NH 45¢ Misperfed Error Block of Four Airmail Stamps - Stuart Katz
SK-28114
$89.30
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1283B, Mint NH 5¢ Large Perf Shift Block of Four WoW - Stuart Katz
SK-28104
$70.50
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1510, Mint NH 10¢ Large Perf Shift Plate Block of Four WoW - Stuart Katz
SK-28105
$42.30
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2403, Mint NH 25¢ Diagonal Perf Shift Pair North Dakota Error - Stuart Katz
SK-28107
$46.95
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1414, MNH 6¢ Black Color Shift Makes Blurry Image Error W/Normal - Stuart Katz
SK-28086
$17.81
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1424, Mint NH 6¢ Scarce Perf Shift Error Pair - MacARTHUR - Stuart Katz
SK-28109
$28.15
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1431, Unused 8¢ Diagonal Misperforation Error Block of Four - Stuart Katz
SK-28338
$37.60
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1455a, Yellow Color Omitted MAJOR ERROR Mint NH - Stuart Katz
SK-27621
$211.50
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2018, MNH 20¢ Partial Black Color Missing Pair With Normal - Stuart Katz
SK-28093
$70.50
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1900, Mint NH 5.2¢ Misperforation Error Strip of Five - Sleigh - Stuart Katz
SK-28321
$23.50
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C90, MNH 31¢ Two Way Misperf Shift Airmail Plane Stamp - Stuart Katz
SK-27976
$23.45
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1800, 22¢ Scarce Misperfed Block of Four Error Stamps Mint NH - Stuart Katz
SK-27453
$47.00
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