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2051a, MNH 13¢ RARE Misperf Error Full Sheet of 50 Stamps - Stuart Katz
$559.30
1866, MNH 37¢ Heavy Ink Smear Error in Block of 30 Stamps - Stuart Katz
$117.50
1733a, Mint NH 13¢ RARE Fold Over Error of 50 Stamps - Stuart Katz
$117.50
1699, Mint NH 13¢ Nice Misperfed Error Sheet of 40 Stamps - Stuart Katz
$183.30
C10 Mint NH XF 10¢ With PSAG Graded 95 Certificate - Stuart Katz
$125.00
1709a, MNH Misperf Error PL# Block of 10 Stamps VERY RARE! - Stuart Katz
$235.00
1694a, MNH Hard to Find Misperf Error Block of 20 Stamps - Stuart Katz
$140.06
2871, Mint NH 29¢ RARE Miscut Error Sheet of 50 Stamps - Stuart Katz
$371.30
1422a, MNH Pre Printing Paper Fold & Misperf Error Block/16 Stamps - Stuart Katz
$117.50
1179, Mint NH 4¢ Misperfed Error Block of Four Stamps W/Normal - Stuart Katz
$70.50
1390a, Pre Print Paper Fold & Color Shift Error Full Sheet - Stuart Katz
$376.00
2276, 22¢ MNH Large Red Tape Splice Error Sheet of 100 Stamps - Stuart Katz
$465.30
2428, MNH 25¢ Fold Over Error Creates Crazy Perforations Sheet - Stuart Katz
$329.00
1384c, Mint Sheet of 50 With Light Green Color Omitted Error - Stuart Katz
$705.00
1158, MNH 4¢ UNIQUE Fold Over Error In Full Sheet of 50 - Stuart Katz
$235.00
1424, MNH 6¢ McArthur Misperfed Error Plate Block PL# Captured - Stuart Katz
$117.50
1213, MNH 5¢ UNIQUE Two Full Gutter Pairs Major Error in Full Sheet Stuart Katz
$376.00
1283, MNH 5¢ Misperforated Full Sheet of 100 Stamps Error Stuart Katz
$211.50
1384 Var, Atlanta, Ga Reverse Offset on Plate Block of Ten Error - Stuart Katz
$423.00
1338, MNH Stunning Fold Over Error PL# Block of 25 Stamps WoW - Stuart Katz
$423.00
2238a, MNH 22¢ Scarce Misperfed Error Sheet of 50 Stamps - Stuart Katz
$371.30
1318, MNH Pre Print Paper Fold & Color Shift Error Plate Block - Stuart Katz
$164.50
2275, MNH 22¢ Massive Ink Smear Error Sheet of 50 Stamps - Stuart Katz
$282.00
2142, MNH 22¢ Olympics Misperfed Error Sheet of 40 Stamps - Stuart Katz
$470.00
1460, Blue Color Shifted to the Left Error Block of Ten Error - Stuart Katz
$83.66
Madonna and Child Booklet Pane of Twenty 37 Cent Postage Stamps Scott 3879a
$14.95
$5.00 Denomination Wave Single Postage Stamp Scott 4719
$9.95
1284, MNH 6¢ IKE Large Miscut Error Snipe Block of 20 Stamps - Stuart Katz
$70.50
758, Unused NH 3¢ With RARE Pre Printing Paper Fold Error - Stuart Katz
$188.00
Hanukkah Twenty Sheet of Twenty 34 Cent Postage Stamps Scott 3547
$12.95
2030, Mint NH 20¢ Looks Like Imperforate Error Block (Blind perfs) - Stuart Katz
$47.00
1611, Mint NH $2 Orange Color Shift Error Plate Block of Four - Stuart Katz
$164.50
1338, Mint NH 6¢ Fold Over Error Makes For Printing Void - Stuart Katz
$70.50
2040, Mint NH 20¢ Misperforation Error Plate Block - Stuart Katz
$47.00
805, Mint NH RARE Misperfed Error Block of 20 Stamps - Stuart Katz
$183.30
640, Mint NH 8¢ RARE Printers Waste Block of Six Stamps - Stuart Katz
$211.50
899, Unused 1¢ Misperforation Error Block of 20 Pre Cancelled - Stuart Katz
$164.50
632, Unused 1¢ Under Inked & Misperfed Error Block of 8 Stamps - Stuart Katz
$282.00
629, 2¢ RARE Diagonal Misperforation Error Block of 20 Stamps WOW - Stuart Katz
$1,405.30
2169 Var, Dry Printing 2¢ Sheet of 100 Stamps Error Mint NH - Stuart Katz
$117.50
413, Used 2¢ VF Scarce Genuine Coil CV $50.00 - Stuart Katz
$30.00
385, Used 1¢ F-VF Scarce Coil Strip of 4 on Piece CV $500.+ - Stuart Katz
$495.00
413, Used 2¢ FVF Scarce Genuine Coil Line Strip of 5 CV $ 475+ - Stuart Katz
$400.00
458, Used 5¢ VF RARE Coil Line Strip of 4 CV $310.00 - Stuart Katz
$195.00
390, Used 1¢ Superb GEM Coil Pair - Stuart Katz
$195.00
413, Used 2¢ FVF Scarce Genuine Coil Strip of 5 CV $ 250+ -- Stuart Katz
$225.00
2165, MNH 22¢ HUGE Color Shift Error Plate Block of Four - Stuart Katz
$141.00
1383, 6¢ Scarce Large Two Way Misperf Error Mint NH - Stuart Katz
$46.95
656, MNH 2¢ Coil Group of 12 F-VF Coil Pairs CV $540.00 - Stuart Katz
$249.00
495, Mint VF NH 4¢ Coils Group of Five Stamps Cat $64.50 - Stuart Katz
$49.95
901, 3¢ RARE Two Way Misperf Error Mint H Defense Stamps - Stuart Katz
$42.30
1726, MNH 20¢ Misperfed Error Plate Block of Six With PL# Captured - Stuart Katz
$117.50
487, Mint 2¢ XF NH GEM Quality Coil Pair - Stuart Katz
$75.00
1479, 8¢ Large Two Way Misperf Error Mint NH Drummer Boy - Stuart Katz
$70.50
1280, Mint NH 2¢ Misperfed Error Plate Block of Four - Stuart Katz
$117.50
C78, MNH 11¢ Misperfed Error Plate Block of Four Airmail Stamps - Stuart Katz
$141.00
2145, 22¢ Large Color Shift Error Mint NH With Normal - Stuart Katz
$46.95
806, Mint 2¢ Two Way Misperf Block of Four Error -- Stuart Katz
$47.00
1731, Mint NH 13¢ Misperfed Error Plate Block of Four - Stuart Katz
$117.50
378, 5¢ RARE Misperf Error Strip of Three Mint NH/LH - WoW - Stuart Katz
$164.50
C90, MNH 31¢ Misperfed Error Plate Block of Four Airmail Stamps - Stuart Katz
$117.50
1597b, Two Grey Color Omitted Errors in Transitional Strip - Stuart Katz
$517.00
1067, Mint NH 3¢ Misperfed Error Plate Block of Four - Stuart Katz
$117.50
2165a, 22¢ Imperforate PL# Strip of 20 Stamps CV $550.+ - Stuart Katz
$399.50
2166a, Imperforate Error Plate# Strip of 20 Stamps MNH CV $500+ Stuart Katz
$376.00
527, Mint 2¢ F/VF NH Plate Block of Six CV $350.00 - Stuart Katz
$150.00
2111, Red Tape Splice on "D" Stamp Sheet of 100 Scarce! - Stuart Katz
$705.00
1729a, Imperforate PL# Strip of 20 Stamps CV $500.00+ - Stuart Katz
$329.00
1007, RARE Mispered 3¢ Error Sheet of 50 Stamps Mint NH -- Stuart Katz
$517.00
1919a, Vertical Perf Shift ERROR & Vertical Gutter Sheet - Stuart Katz
$559.30
C11, HUGE COLOR SHIFT MAJOR ERROR PLATE BLOCK - 5¢ Beacon - Stuart Katz
$1,405.30
2165a, Complete Imperforate Error Sheet of 50 Stamps MNH CV $1250+ Stuart Katz
$935.30
590, Mint 9¢ F/VF NH Plate Block of Four CV $225.00 - Stuart Katz
$125.00
2492a, Scarce Die Cutting Shifted Complete Pane of 20 32¢ Stamps - Stuart Katz
$93.06
1622Cd, Most Likely Unique Imperforate Pane of 100 CV $5625.00 - Stuart Katz
$1,781.30
1394, Vertical Perf Shift ERROR Complete Sheet of 100 8¢ IKE - Stuart Katz
$517.00
1527, Large Misperforation 10¢ Envirement Error Pair Mint NH - Stuart Katz
$56.35
2414, 25¢ HUGE Gold Color Shift Error NEW FIND! - Mint NH -- Stuart Katz
$56.40
1473, Misperforated Error Pharmacy Sheet of 50 8¢ Stamps - Stuart Katz
$2,350.00
1597b, Grey Color Omitted Error in Transitional Strip CV $600.00 - Stuart Katz
$183.30
1509a, Imperforate Between Errors in Complete Pane of 100 RARE - Stuart Katz
$1,410.00
586, Mint 5¢ VF NH Plate Block of 4 CV $425.00 - Stuart Katz
$325.00
583, Mint 2¢ F/VF NH Plate Block of 4 CV $110.00 - Stuart Katz
$60.00
633, Mint 1-1/2¢ VF NH Plate Block of Four - CV $115.00 - Stuart Katz
$75.00
541, Mint 3¢ VF NH Block of 4 Stamps Well Centered GEM! - Stuart Katz
$300.00
2026a, Mint NH 20¢ Imperforate PB of 20 Stamps PFC CV $900+ Stuart Katz
$559.30
C87, 18¢ Statue of Liberty HUGE Color Shift ERROR Plate Block - Stuart Katz
$277.30
2399a, 25¢ Gold Color Omitted PL# Strip of 20 Stamps CV $500.+ - Stuart Katz
$141.00
590, Mint 9¢ XF NH Plate Block of Four - A GEM! - Stuart Katz
$200.00
1767a, Mint NH 15¢ Misperfed Shift Error Block Trees - Stuart Katz
$117.50
1842a, 15¢ Imperforate PL# Strip of 20 Stamps CV $400.+ - Stuart Katz
$277.30
1586a, 13¢ Imperforate PL# Strip of 12 Stamps CV $240.00+ - Stuart Katz
$164.50
528, Mint 2¢ XF LH Top Plate Block of Six CV $100.00 - Stuart Katz
$85.00
2399, Mint NH 25¢ Huge Misperf Shift Error Block of Six Stamps - Stuart Katz
$141.00
1824 MNH 15¢ Helen Keller Color Shift Error Full Sheet of 50 Stamps Stuart Katz
$705.00
1596, MNH 13¢ Eagle Misperfed Error Plate Block of 12 Stamps - Stuart Katz
$140.06
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