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2141a, MNH 22¢ Duck Decoys Misperfed Plate Block Freaky Error - Stuart Katz
$46.95
1720a, MNH 13¢ Large Misperf Freaky Error Sheet of 50 Stamps RARE - Stuart Katz
$559.30
2579, MNH 29¢ Diagonal Misperf Freak Error Sheet of 50 Stamps - Stuart Katz
$935.30
1926, MNH 18¢ Black Color Shifted UP Freaky Error Sheet of 50 - Stuart Katz
$705.00
1894d, MNH 20¢ Black Color Omitted Error In Freaky Sheet of 100 - Stuart Katz
$371.30
1391, MNH 6¢ Colors Shifted Down Freak Error Sheet of 50 Stamps - Stuart Katz
$465.30
566, Mint NH VF 15¢ Statue of Liberty Block of Four - Stuart Katz
$95.00
Dummy Testing Stamps Full Roll of 3000 Stamps - Stuart Katz
$211.50
484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! - Stuart Katz
$75.00
1335, MNH 99% of Gold Color Missing Error With Normal Stamp - Stuart Katz
$37.55
484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! -***- Stuart Katz
$75.00
484, Mint XF LH 3¢ Plate Block of Six - A BEAUTY! -- Stuart Katz
$75.00
575, Mint 1¢ XF NH Plate Block of Six - Stuart Katz
$85.00
572, Mint NH F/VF $2 Capital PO FRESH Vertical Pair CV $240 - Stuart Katz
$140.00
557, Mint NH VF 5¢ Roosevelt Block of Four -**- Stuart Katz
$99.00
702, Mint NH Red Cross Shifted Up Into Design Plate Block Error - Stuart Katz
$446.50
2339 Var, Mint NH 22¢ Odd Inking Error With Normal -*- Stuart Katz
$93.06
1375, MNH 6¢ Multiple Colors Shifted Down Error REMARKABLE! - Stuart Katz
$79.90
570, Mint NH F/VF 50¢ PO FRESH Block of Four CV $280 — Stuart Katz
$195.00
384V, Mint H Paste-Up Strip With PL# 5660 Under Tab - Stuart Katz
$95.00
1555 Var, MNH Reverse Printing Under Gum Error - Stuart Katz
$37.55
242, Used $2 Columbian Lightly Canceled and Sound! - Stuart Katz
$395.00
572, Mint NH $2 Capital PO FRESH Block of Four CV $480+ -- Stuart Katz
$250.00
1818, Mint NH "B 18¢" Pair With Full Gutter Between Error - Stuart Katz
$258.50
1354a, MNH 6¢ Misperfed Error Strip of 20 Flag Stamps - Stuart Katz
$465.30
1541a, MNH 10¢ Reverse Offset Printed Under Gum Error Plate Block - Stuart Katz
$89.30
1926, Mint VF NH Scarce Color Shift Error Sheet of Fifty Stamps - Stuart Katz
$235.00
Columbia River Gorge $22.95 Express Mail Plate Block of Four Stamps Scott 5041
$249.95
X-Planes $14.40 Express Mail Plate Block of 4 Postage Stamps Scott 4019
$119.95
1331-32a Red Omitted from Capsule on Center Stamp ERROR Cat $200. - Stuart Katz
$84.55
499, Mint NH 2¢ Amazing Perforation Shift Block of Four Error - Stuart Katz
$47.00
1769a, Mint VF NH 15¢ Imperforate Pair Error - Stuart Katz
$56.40
1726, Mint NH 13¢ Misperfed Error Zip Block of Four - Stuart Katz
$42.30
C83a, Mint VF NH 13¢ Imperforate Pair Error - Stuart Katz
$47.00
525c, Mint OG 1¢ Imperforate Between Pair Error CV $750.00 - Stuart Katz
$329.00
1720a, Mint NH 13¢ Diagonal Misperfed Error Block of 4 Stamps - Stuart Katz
$89.30
1140, Mint NH 4¢ Misperfed Plate Block Error - Very Scarce - READ - Stuart Katz
$47.00
1866, MNH 37¢ Misperfed & Pre Printing Paper Fold Block Error - Stuart Katz
$277.30
C16, Mint NH Superb GEM 5¢ With PSAG Graded 100 Certificate - Stuart Katz
$1,450.00
1844, Mint NH 1¢ Misperfed Error Zip Block of Eight Stamps - Stuart Katz
$188.00
1433, Mint NH 8¢ Amazing Color Shift Error HOLY COW! - Stuart Katz
$70.50
1711, Mint NH 13¢ Misperfed Error (Misplaced Pins) Block - Stuart Katz
$89.30
1879a, Mint NH 18¢ Misperfed Error Block of Four - Roses - Stuart Katz
$37.55
C20, Mint NH Superb GEM 25¢ With PSAG Graded 100 Certificate * Stuart Katz
$500.00
390, Used Superb 1¢ Coil With PSAG Graded 98J Certificate - Stuart Katz
$495.00
C22, Mint NH Superb GEM 50¢ With PSAG Graded 100 Certificate - Stuart Katz
$750.00
390, Used 1¢ Coil Pair Superb With PSAG Graded 98 Certificate - Stuart Katz
$675.00
1683, Mint NH 13¢ Looks Like Double Impression Error (Tag Shift) - Stuart Katz
$89.30
2283B, Red Color Removed From Sky Error - Complete Booklet of Two Panes
$79.90
2579, Mint NH 29¢ Misperfed - RARE Block of Six Stamps Error - Stuart Katz
$70.50
2515, Mint NH 25¢ Misperfed Error - Plate Block of 4 Shows Gutter - Stuart Katz
$117.50
1058a, Mint NH 4¢ Lincoln Imperforate Pair Error - Stuart Katz
$47.00
1381, Mint NH 6¢ HUGE Color Shift Error Block With Normal - Stuart Katz
$235.00
R6c, Pre Printing Paper Fold Error Group of 30 Stamps - WoW Stuart Katz
$841.30
1432, Mint NH 8¢ Unbelievable Color Shift Error Block With Normal - Stuart Katz
$112.80
1335, Mint NH 5¢ Scarce Misperfed Error Pair - Eakins - Stuart Katz
$37.55
1467a, MNH 8¢ Color Shift Error Sheet of 32 Stamps - Stuart Katz
$140.06
2421a, MNH 25¢ Bill of Rights Black Color Omitted ERROR Plate Block Stuart Katz
$653.30
807, Mint NH 3¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz
$140.06
804, Mint NH 1¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz
$140.06
1731, Mint NH 13¢ Misperfed Error Plate Block of Four PL# Captured - Stuart Katz
$56.40
2440a, 25¢ Love Imperforate Pair ERROR - VF NH - Stuart Katz
$423.00
1384b, XF NH Imperforate Error Pair - VERY RARE! - Stuart Katz
$517.00
1542a, DULL Black Litho Colro Omitted MAJOR ERROR With Normal
$423.00
2444a, Mint VF NH 25¢ Black Color Omitted Error With Normal -- Stuart Katz
$653.30
J88, Full Mint Sheet of 100 Postage Due Stamps PL# 26660 - Stuart Katz
$89.95
989, Mint NH 3¢ Stunning Misperforated ERROR Pair - RARE! - Stuart Katz
$47.00
1895, Mint NH Large Miscut Error Coil Pair - Stuart Katz
$37.60
1895, Mint NH Large Miscut Error Coil - Stuart Katz
$18.75
American Bison of Twenty 21 Cent Postage Stamps Scott 3468
$16.95
95, Used 5¢ Very Nice Sound Rare Stamp Cat $850.00 - Stuart Katz
$295.00
C18, Mint VF NH 50¢ Block of Four Stamps Cat $300.00 -- Stuart Katz
$189.00
Winslow Homer Complete Sheet of Fifty 4 Cent Postage Stamps Scott 1207
$12.95
C1, Mint NH VF 6¢ Airmail Stamp Nicely Centered! - Stuart Katz
$75.00
612, Mint NH Scarce Plate Block of Four Stamps Cat $500.00 - Stuart Katz
$275.00
RW71A, $15 Redheads DUCK Stamp Self-Adhesive Pane - Stuart Katz
$25.00
WS7b, Mint NH Booklet Pane of Ten Stamps - Stuart Katz
$45.00
Wedding Cake Sheet of Twenty 2 Ounce Current Rate Stamps Scott 5000
$79.79
Wedding Cake Sheet of 20 U.S. Postage 65 Cent Stamps Scott 4602
$59.88
Jackie Robinson Baseball Player Sheet of Fifty 20 Cent Postage Stamps Scott 2016
$24.95
3784Ae, Mint NH 37¢ Imperforate Plate Block of 4 MAJOR ERROR! -- Stuart Katz
$258.50
1526, 10¢ Large Misperforation Error Plate Block Robert Frost - Stuart Katz
$117.50
1115, 4¢ Lincoln Large Misperforation Error Pair Mint NH - Stuart Katz
$37.60
2704, Mint NH 29¢ Block With Misplaced Perfs Error WoW Mint NH - Stuart Katz
$141.00
1476 Var, Mint NH With Blue Color Missing Error With Normal - Stuart Katz
$376.00
R171p, Mint VF LH/LH RARE Block of Four Cat $350.00+ - Stuart Katz
$250.00
2419, $2.40 1989 Priority Mail Full Sheet of 20 Stamps CV $150.00 - Stuart Katz
$60.00
3635c, 37¢ Misperforated ERROR Booklet Pane of 20 * Stuart Katz
$37.60
Fly in Black Three Strikes Fancy Cancel Registered Cover RARE! - Stuart Katz
$487.50
C92c, Black Intaglio Color Omitted Transitional Block With PSE Cert Stuart Katz
$1,175.00
Hearts 2 Different Strong Strikes Fancy Cancel Registered Cover - Stuart Katz
$191.75
Settlement of Florida Sheet of Fifty 5 Cent Postage Stamps Scott 1271
$14.95
Emily Dickinson Sheet of Fifty 8 Cent Postage Stamps Scott 1436
$19.95
John Sloan Sheet of Fifty 6 Cent Postage Stamps Scott 1433
$12.95
Nevada Statehood Sheet of Fifty 5 Cent Postage Stamps Scott 1248
$14.95
Daniel Boone Sheet of Fifty 6 Cent Postage Stamps Scott 1357
$14.00
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