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1444, Large Color Shift ERROR Plate Block of 12 8¢ Stamps - Stuart Katz
$164.50
Uncertified, Multi-Color, 8 Cent, VF (Very Fine), Mint Never Hinged/MNH, Error
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1558, Misperforated ERROR Sheet of 50 Collective Bargaining Stamps - Stuart Katz
$893.00
Uncertified, Multi-Color, 10 Cent, VF (Very Fine), Mint Never Hinged/MNH, Error
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K1, Used 2¢ on 1¢ Shanghai Block of Four Stamps Cat $375.00 - Stuart Katz
$150.00
Uncertified, Multi-Color, 2 Cent, VF (Very Fine), Used, Politicians
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RW75A, Northern Pintails Federal DUCK Stamp Self-Adhesive Pane - Stuart Katz
$52.95
Uncertified, Multi-Color, $15, VF (Very Fine), Mint Never Hinged/MNH, Ducks
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Climax Gasoline Kemp MFG 8/4/98 Advertising Cover - Stuart Katz
$10.00
Uncertified, Multi-Color, Ungraded, Used, Gasoline
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530, Plate Block Collection of 25 For the Specialist! Cat $1375 - Stuart Katz
$595.00
Uncertified, Violet, 3 Cent, Ungraded, Mint Never Hinged/MNH, Politicians
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C92a Pair - Color Shift MAJOR ERROR - Very Dramatic - Mint NH - Stuart Katz
$32.90
Uncertified, Multi-Color, 31 Cent, VF (Very Fine), Mint Never Hinged/MNH, Aviation
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579, 2¢ MNH Block of Four Imperforate Bottom Margin Cat $560.00 - Stuart Katz
$183.30
Uncertified, Carmine, 2 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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TC171//190, Four Different Cigar Tax Paid Stamps - Stuart Katz
$115.00
Uncertified, Ungraded, No Gum, Cigar Stamps
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Billboard Type Advertising Cover Front & Back - Magazines & Books Stuart Katz
$20.00
Uncertified, Multi-Color, Ungraded, Used, Books
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583, MNH 2¢ Perforation 10 Plate Block Of Four Stamps Cat $110.00 - Stuart Katz
$40.00
Uncertified, Carmine, 2 Cent, Ungraded, Mint Never Hinged/MNH, Politicians
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1361, 6¢ Very Scarce Reverse Printing ERROR With Normal Mint NH - Stuart Katz
$42.30
Uncertified, VF (Very Fine), Mint Never Hinged/MNH, Reverse Printing
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"Billboard" Type Advertising Cover Magazines & Books WoW - Stuart Katz
$20.00
Uncertified, Multi-Color, Ungraded, Used, Magazines
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4847, Die Cut Shift ERROR Block of Six Stamps VERY RARE! - Stuart Katz
$141.00
Uncertified, Multi-Color, First Class, VF (Very Fine), Mint Never Hinged/MNH, Error
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483, Mint 3¢ Superb NH Plate Block of Six Stamps Cat $200.00 - Stuart Katz
$150.00
Uncertified, Purple, 3 Cent, Superb, Mint Never Hinged/MNH, Politicians
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661, VF NH 3¢ Kansas Plate Block of Four Stamps Cat $325.00 - Stuart Katz
$225.00
Uncertified, Violet, 3 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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528B, Gash on Nose VF NH Plate Block of Six Stamps Cat $375.00+ - Stuart Katz
$300.00
Uncertified, Carmine, 2 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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534, Mint 2¢ XF/Superb NH Plate Block of Six Stamps Cat $200.00 - Stuart Katz
$150.00
Uncertified, Carmine, 2 Cent, Superb, Mint Never Hinged/MNH, Politicians
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RW79A, Wood Duck Federal Duck Stamp Self-Adhesive Pane - Stuart Katz
$42.95
Uncertified, Multi-Color, $15, Ungraded, Mint Never Hinged/MNH, Ducks
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RW72, VF Mint NH 2006 Hooded Merganser Federal Duck Stamp - Stuart Katz
$25.00
Uncertified, Multi-Color, $15.00, VF (Very Fine), Mint Never Hinged/MNH, Ducks, 2001-2010
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DC Comics Super Heroes Full Sheet of Twenty 39¢ Stamps Scott 4084 - Stuart Katz
$18.95
Uncertified, Multi-Color, 39 Cent, VF (Very Fine), Mint Never Hinged/MNH, Comics
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10/26/1933 Graf Zeppelin Century of Progress Germany to Chicago USA Flight 352
$247.50
Uncertified, Ungraded, Used, Zeppelin, 1931-1940
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270, Mint PL# & Imprint Strip VF NH With PFC Certificate Cat $375. - Stuart Katz
$325.00
PF, Chocolate, 5 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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463a, Mint NH Position "A" Booklet Pane of Six Cat $180.00 - Stuart Katz
$75.00
Uncertified, Carmine, 2 Cent, Ungraded, Mint Never Hinged/MNH, Booklet pane
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1919a, Scarce Misperforation Shift ERROR PB of Eight Stamps - Stuart Katz
$470.00
Uncertified, Multi-Color, 18 Cent, VF (Very Fine), Mint Never Hinged/MNH, Space
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1705, Color Shift ERROR Zip Block of Six 13¢ Stamps MNH - Stuart Katz
$211.50
Uncertified, Multi-Color, 13 Cent, VF (Very Fine), Mint Never Hinged/MNH, Sound Recording
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2411, Large Misperfed ERROR Plate Block of Four 25¢ Stamps MNH - Stuart Katz
$79.90
Uncertified, Multi-Color, 25 Cent, VF (Very Fine), Mint Never Hinged/MNH, Music, Musicians
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806, Five Misperforation ERROR Plate Blocks 2¢ Prexie Stamps - Stuart Katz
$258.50
Uncertified, Carmine, 2 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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1731, Misperforation ERROR Shift Complete Sheet of 50 Stamps - Stuart Katz
$423.00
Uncertified, Multi-Color, 13 Cent, VF (Very Fine), Mint Never Hinged/MNH, Celebrities
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1478 Var, Red Color Missing from Top Stamp & Color Shift ERROR - Stuart Katz
$1,410.00
Uncertified, Multi-Color, 8 Cent, VF (Very Fine), Mint Never Hinged/MNH, Historical Events
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R74a, Superb Gem Passage Ticket Revenue Stamp Cat $350.00 - Stuart Katz
$275.00
Uncertified, $1, Superb, Used, Revenue
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483, Mint XF NH 3¢ Plate Block of Six Stamps Cat $200.00 - Stuart Katz
$140.00
Uncertified, Purple, 3 Cent, XF (Extremely Fine), Mint Never Hinged/MNH, Politicians
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2401 Variety, Montana 25¢ Unused Imperforate Pair ERROR (PW) - Stuart Katz
$329.00
Uncertified, Multi-Color, 25 Cent, VF (Very Fine), Mint Never Hinged/MNH, Montana
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1281, Major Misperforation ERROR Plate Block With PL# Captured - Stuart Katz
$79.90
Uncertified, Purple, 3 Cent, VF (Very Fine), Mint Never Hinged/MNH, Error
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2550a, MNH 29¢ Cole Porter Imperforate Between Zip Block ERROR - Stuart Katz
$658.00
Uncertified, Multi-Color, 29 Cent, VF (Very Fine), Mint Never Hinged/MNH, Celebrities
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3123c, 32¢ Swans RARE Complete Imperforate Booklet Pane ERROR - Stuart Katz
$893.00
Uncertified, Multi-Color, 32 Cent, VF (Very Fine), Mint Never Hinged/MNH, Swans
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3632b, Mint NH 37¢ Imperforate Coil Strip of Six Stamps - Stuart Katz
$423.00
Uncertified, Multi-Color, 37 Cent, VF (Very Fine), Mint Never Hinged/MNH, Flags, National Emblems
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1772, MNH 15¢ IYC Block of 6 With DOUBLE Perforations ERROR - Stuart Katz
$164.50
Uncertified, 15 Cent, VF (Very Fine), Mint Never Hinged/MNH, IYC
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1286, Mint NH Huge ERROR Pair With Tape Splice With Normal - Stuart Katz
$47.00
Uncertified, Magenta, 10 Cent, VF (Very Fine), Mint Never Hinged/MNH, Politicians
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1951c, Mint NH 20¢ Love Blue Color Omitted Scarce ERROR - Stuart Katz
$150.40
Uncertified, Multi-Color, 20 Cent, VF (Very Fine), Mint Never Hinged/MNH, Love
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2718aPb, MNH XF Imperforate Pane of Four Stamps Proof Cat $1000.00 - Stuart Katz
$352.50
Uncertified, Multi-Color, 29 Cent, XF (Extremely Fine), Mint Never Hinged/MNH, Christmas
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2476, Mint NH 1¢ Large Misperforation ERROR Block of Four Plus! - Stuart Katz
$70.50
Uncertified, Multi-Color, 1 Cent, VF (Very Fine), Mint Never Hinged/MNH, Birds
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2646aPi, MNH XF Imperforate Pane of Five Bird Stamps Proof - Stuart Katz
$423.00
Uncertified, Multi-Color, 29 Cent, XF (Extremely Fine), Mint Never Hinged/MNH, Birds
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2788aP, MNH XF Imperforate Block of Four Proof Cat $400.00 - Stuart Katz
$305.50
Uncertified, Multi-Color, 29 Cent, XF (Extremely Fine), Mint Never Hinged/MNH, Childrens Books
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2039a, MNH 20¢ Volunteer Lend a Hand Imperforate Pair ERROR - Stuart Katz
$399.50
Uncertified, Multi-Color, 20 Cent, VF (Very Fine), Mint Never Hinged/MNH, Volunteer
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2904c, XF Mint NH Nonprofit Org Imperforate Coil Pair ERROR - Stuart Katz
$183.30
Uncertified, Multi-Color, VF (Very Fine), Mint Never Hinged/MNH, Nonprofit
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1833a, XF MNH 15¢ Learning Imperforate Between Pair ERROR - Stuart Katz
$112.80
Uncertified, Multi-Color, 15 Cent, VF (Very Fine), Mint Never Hinged/MNH, Learning
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2044a, Mint NH 20¢ Scott Joplin Imperforate ERROR Pair - Stuart Katz
$272.60
Uncertified, Multi-Color, 20 Cent, VF (Very Fine), Mint Never Hinged/MNH, Black Heritage
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