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86, Unused 1¢ Misperfed Error RARE on an Early Stamp CV 00.00 - Stuart Katz

$ 171.6 $ 102.96

US STAMP CHRISTMAS SEAL 1927 MH/OG BLK OF 4 PROOF STAMPS ERROR #5

$ 1.32 $ 0.79

** U.S. #1608 .50c IRON "BETTY" LAMP DRAMATIC COLOR SHIFT MNH NICE **

$ 11.43 $ 6.85

nystamps US Errors,Freak,Oddities Stamp Mint OG NH Misperf Error S17y1034

$ 0.22 $ 0.13

1894c, VF NH 20¢ With Blue Color Omitted Error - Stuart Katz

$ 43.95 $ 26.37

1510, Mint NH 10¢ Large Perf Shift Plate Block of Four WoW - Stuart Katz

$ 39.6 $ 23.76

BK140 Variety COMPLETE BOOKLET OF 1 PANE with PLATE #4 (By 871)

$ 35.19 $ 21.11

R82c, Pre Printing Paper Fold Error Group of 11 Stamps - WoW Stuart Katz

$ 286 $ 171.6

2147 Var, Most of Red & Yellow Missing Error PL#3333 Strip of 7 Cert Stuart Katz

$ 308 $ 184.8

Yorktown George Washington Rochambeau de Grasse Vignette Frame Shift Error #703

$ 8.79 $ 5.27

nystamps US Errors,Freak,Oddities Stamp Mint Misperf Error S17y1026

$ 0.09 $ 0.05

US MINT BLOCK SCOTT#702,2C STAMP LAKE COLOR ERROR REDCROSS PLATE BLK OF 4 MNH OG

$ 484 $ 290.39

998, Mint VLH 3¢ Misperforation Error Showing Gutter at Top - Stuart Katz

$ 26.4 $ 15.83

1525, Mint NH 10¢ Misperf Shift Error Zip Block of Four Stamps - Stuart Katz

$ 110 $ 66

915a VF NH Blue & Red Over Black Reverse Printing Error W/Normal -- Stuart Katz

$ 17.55 $ 10.53

Scott 845 - MISCUT strip of 2 with LINE and partial plate number MNH

$ 5.98 $ 3.59

T6/23 US Revenue Stamp BOB Proprietary 1914 RB33 1/4c Block 6 MNHOG Great Coll

$ 6.15 $ 3.69

T6/24 US Revenue Stamp BOB Proprietary 1914 RB35 5/8c Block 6 MNHOG Great Coll

$ 6.15 $ 3.69

nystamps US Errors,Freak,Oddities Stamp # 899B Mint OG NH S17y1012

$ 0.09 $ 0.05

nystamps US Errors,Freak,Oddities Stamp Mint OG NH Center Shifted Paid S17y1040

$ 0.22 $ 0.13

Error 3007 bk 233 2nd pane blank Mint OG NH (09/21 TJ)

$ 263.12 $ 157.87

O148A VAR IMPERF ERROR PAIR OF 2 STAMPS NH PRINTERS WASTE (Stock BX 1037) O148

$ 61.59 $ 36.95

nystamps US Errors,Freak,Oddities Stamp Mint Misperf S17y1032

$ 0.3 $ 0.18

T6/25 US Revenue Stamp BOB Proprietary 1914 RB34 3/8c Block 4 MNHOG See Picture

$ 2.63 $ 1.57

#2130a 10.1 Oil Wagon EFO Misperforated MNH OG VF "Include New Mount"

$ 3.52 $ 2.11

150, Used 10¢ RARE Large Misperfed Error on an Early Stamp - Stuart Katz

$ 74.8 $ 44.88

RARE US Stationary Envelope PACIFIC STAGE & EXPRESS Co ERROR Stamped in Reverse

$ 96.8 $ 58.08

nystamps US Errors,Freak,Oddities Stamp # 26 Mint OG H Perf Error S17y1004

$ 0 $ 0

U.S. Scott #2915A 32-Cent Flag Over Porch Plate #9.9999 EFO USED PS1 VF Cat.

$ 7.03 $ 4.21

2866a, Mint NH 29¢ Large RARE Misperf Error Plate Block - Stuart Katz

$ 110 $ 66

1556 10c Misperf Error / EFO Space "Pioneer 10" Mint NH (Stk1)

$ 6.15 $ 3.69

Jurassic Brontosaurus Stegosaurus Allosaurus Dinosaur Frame Shifts Errors #1390

$ 8.79 $ 5.27

nystamps US Errors,Freak,Oddities Stamp Mint OG NH Misperf S17y1010

$ 0.09 $ 0.05

1597, MNH 15¢ Part Color Missing Error in Sheet of 100 Stamps - Stuart Katz

$ 220 $ 132

2046, 20¢ Hard to Find Misperfed Error Babe Ruth Stamp Mint NH - Stuart Katz

$ 35.2 $ 21.12

1287, Mint NH 13¢ JFK Misperfed Error RARE Margin Copy - Stuart Katz

$ 26.4 $ 15.83

1553, Mint NH 13¢ Misperf Error Zip Block of Four Stamps - Stuart Katz

$ 52.8 $ 31.67

804, Mint NH 1¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz

$ 131.12 $ 78.67

113,14, Used Misperfed Errors RARE on an Early Stamps - Stuart Katz

$ 43.95 $ 26.37

2096, Mint NH 20¢ Scarce Large Misperfed Error Smokey Bear - Stuart Katz

$ 28.99 $ 17.39

J89,J90 numeral shifts, vf MNH

$ 0.87 $ 0.52

807 - Huge Misperf "COD" Error / EFO "Presidential Series" "Jefferson" Mint NH

$ 8.79 $ 5.27

1744, Mint NH 13¢ Large Color Shift Error Harriet Tubman W/Normal - Stuart Katz

$ 26.35 $ 15.81

907, Mint NH 2¢ Over & Under Inked Error Block of 20 Stamps - Stuart Katz

$ 78.32 $ 46.99

Error 2424 Pair Missing Color Mint NH OG Extra Fine LB

$ 66 $ 39.6

United States Christmas Seal 1927 Triple Error Double Print Stamp

$ 26.35 $ 15.81

CE2 Air Mail Special Delivery Strip of 5 EFO Misperforations (crazy perf) Error.

$ 52.8 $ 31.67

U.S. Stamps, Scott # 1895 Error, MNH

$ 7.04 $ 4.22

1472 Multiple Color Shift Error / EFO "Santa" Mint NH

$ 6.15 $ 3.69

Stamps SC 2870 Legends of the West * ERROR SHEET * Mint * Recalled w/Envelope

$ 83.16 $ 49.89

2756b Black Engraving OMITTED ERROR Plate Block of 4 Stamps NH (2756 A1)

$ 343.19 $ 205.91

1201 4c Apprenticeship misperf MNH

$ 3.47 $ 2.08

INVERTED yellow block number on 8c PTA #1463 US Stamp sheet + normal sheet

$ 17.59 $ 10.55

499, 2¢ Misperfed Error Margin Block Mint Disturbed Gum - Stuart Katz

$ 26.4 $ 15.83

Error 2529a Imperforate Pair Printer's Waste Mint NH OG Extra Fine LB

$ 25.52 $ 15.31

SCOTT QE4 1925 25 CENT SPECIAL HANDLING ISSUE EFO VARIETY USED VF CAT !

$ 21.12 $ 12.67

1611, RARE Lantern Misperfed Error Mint NH - Stuart Katz

$ 30.8 $ 18.48

1608, 50¢ Black Color Shifted Well to the Right Error Mint NH - Stuart Katz

$ 35.15 $ 21.09

EFO-Scott #2121a - 22¢ Seashell Booklet pane of 10 with horizontal Plate Scratch

$ 5.72 $ 3.43

2071, Mint NH 20¢ Misperfed Error Zip Block of Four - Stuart Katz

$ 74.8 $ 44.88

T6/22 US Revenue Stamp BOB Proprietary 1914!RB32 1/8c Block 6 MNHOG Great Coll

$ 6.15 $ 3.69

Scott 806 block of 30 with smeared print

$ 2.63 $ 1.57

BK143 Variety COMPLETE BOOKLET OF 2 PANES PLATE #3 ONLY ON BOTTOM PANE (By 870)

$ 43.99 $ 26.39

1716 - Scarce Ink Smear Error / EFO Bicentennial "Lafayette" Mint NH

$ 7.91 $ 4.74

R228 1 cent Documentary Double Impression

$ 13.15 $ 7.89

Error 1338AB imperf strip of 4 possible line Mint OG NH SCV 0++ (09/21 TJ)

$ 492.8 $ 295.68

836, Mint NH 3¢ Scarce Early Misperforation Error Block of Four - Stuart Katz

$ 198 $ 118.8

U.S: MINT #807 EXPERIMENTAL EYE PLATE NUMBER BLOCK/8 NEVER HINGED OG

$ 39.6 $ 23.76

623 - 17c Scarce 2-Way Misperf Error / EFO Pl# Single "Woodrow Wilson" MNH "READ

$ 24.63 $ 14.77

US Scott 1136 4c Ernst Reuter - Champion of Liberty, EFO perf shift

$ 1.75 $ 1.05

US #1385 6c Hope for the Crippled, plat Block MNH EFО error misperf

$ 1.75 $ 1.05

Set of 2 EFOs #1305E line coil pair w/ partial plate, 1897 1c top & bottom pl #

$ 2.19 $ 1.31

US Scott 2228 Stagecoach 4c MNH Mint NH EFO misperf

$ 1.75 $ 1.05

MNH Vertically MISPERFORATED Left Margin Block of 4, Scott #1294a, O'Neill

$ 29.92 $ 17.95

US Error-Freaks-Oddities Stamp #1895a 20¢ Flag Over Supreme Court Pair Imperf

$ 0.87 $ 0.52

1384c, 6¢ With Light Green Color Omitted Error W/Normal Mint NH - Stuart Katz

$ 17.55 $ 10.53

1822, MNH RARE Misperfed 15¢ Sheet of 150 Stamps WoW - Stuart Katz

$ 523.6 $ 314.16

1455, Mint NH 8¢ Partial Reverse Printing Under Gum Error W/Normal - Stuart Katz

$ 30.8 $ 18.48

MISPERFED , SCOTT 2261, 16.7 popcorn wagon, mnh triple

$ 2.62 $ 1.57

968, Mint NH 3¢ Misperforation Error Block of Four - Poultry - Stuart Katz

$ 66 $ 39.6

1603 24c Church misperf EE bar capture MNH

$ 4.35 $ 2.61

1243 - Misperf Error / EFO "Charles M. Russell" "American Artist" Mint NH

$ 10.11 $ 6.06

EFO collection, 10 errors, blind perf color shift ink spots misperf

$ 7.91 $ 4.74

US 1732-1733 13c Captain James Cook 1978 MNH mint nh EFO, ink smear

$ 2.63 $ 1.57

Error 2425 Missing Color Mint NH OG Extra Fine LB

$ 44 $ 26.4

1578a, Mint NH 10¢ Color Shift ERROR Pair Banking Commerce - Stuart Katz

$ 22 $ 13.2

US #1823 15c EMILY BISSELL MNH mint nh EFO perf shift

$ 2.63 $ 1.57

1148 8c Masaryk misperf MNH

$ 5.23 $ 3.14

1230, Mint NH 5¢ RARE Misperf Shift Error Block of Four Stamps - Stuart Katz

$ 87.12 $ 52.27

Error 2510 Missing Color Mint NH OG Very Fine LB

$ 43.12 $ 25.87

US EFO Scott #2581 Christmas Santa Single USED Major Misperf!

$ 4.84 $ 2.9

US EFO Scott #2581 Christmas Santa Single USED Major Misperf! 2

$ 4.84 $ 2.9

US EFO Scott #1401 Ike 6c Single USED Major Misperf!

$ 4.84 $ 2.9

US EFO Scott #1395 Ike 8c Booklet Single USED Major Misperf!

$ 4.84 $ 2.9

2870, Legends of the West Error sheet (No blue holder) Mint VF NH - Stuart Katz

$ 79.15 $ 47.49

US #1440-43, 8c Historic Preservation MNH mint nh EFO perf shift

$ 2.63 $ 1.57

US #1484 8c 1973 Block of 4 of George Gershwin MNH EFO color shift

$ 2.63 $ 1.57

US Scott #1925 18c Disabled Doesn't Mean Unable, MNH Mint NH EFO, ink streak

$ 2.63 $ 1.57

US Scott #1374 6c John Wesley Powell MNH Mint NH EFO, color shift

$ 2.63 $ 1.57

US #1897A Locomotive 1870s 2c, MNH PNC5 Pl #10, EFO top & bottom numbers!

$ 2.63 $ 1.57