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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

US Scott 1117 4c Kossuth Champion of Liberty, EFO perf shift

$ 2.63 $ 1.57

US Scott 1419 US Stamp 1970 6c UN 25th Anniversary, EFO gutter snipe

$ 2.63 $ 1.57

US #1880-89 American Wildlife booklet pane MNH mint nh EFO perf shift

$ 2.63 $ 1.57

US Scott #2186 1991 DENNIS CHAVEZ 35c. MNH Mint NH EFO misperf

$ 2.63 $ 1.57

US #1555 MNH 10c D.W. Griffith MNH EFO color shift, set of 2 EFOs, top & bottom

$ 2.63 $ 1.57

EFO C23c ULTRAMARINE ERROR NH CHOICE CORNER COPY & SIGNED "H. BLOCK" CERTIFICATE

$ 440 $ 264

2870 Legends of the West (First Day Issue Program) 1994

$ 22 $ 13.2

2515, Mint NH 25¢ Misperfed Error - Plate Block of 4 Shows Gutter - Stuart Katz

$ 110 $ 66

1237, Mint NH 5¢ The Sciences Scarce Misperforation Error - Stuart Katz

$ 21.95 $ 13.17

J93,J96 numeral shifts, f-vf MNH

$ 0.87 $ 0.52

#2870 - 29¢ Recalled Legends - Error Sheet of 20 Still Sealed as shipped Lottery

$ 198 $ 118.8

2607c, Mint NH 23¢ PL# 1111 Imperforate Error Strip of Six - Stuart Katz

$ 198 $ 118.8

2038, Mint NH 20¢ Misperfed Error Zip Pair of Stamps - Stuart Katz

$ 44 $ 26.4

2281G, Mint VF NH 25¢ Bee Imperforate Pair Error - Stuart Katz

$ 30.8 $ 18.48

1720a, Mint NH 13¢ Diagonal Misperfed Error Block of 4 Stamps - Stuart Katz

$ 110 $ 66

Apollo 11 Lunar Module First Man On The Moon Color Frame Shifts Error MINT! #C76

$ 11.43 $ 6.85

Set of 5 EFOs MNH mint nh perf & color shift, missed perf

$ 3.95 $ 2.37

US EFO Scott #1395 Ike 8c Booklet Block of 4 USED Major Misperf!

$ 13.64 $ 8.18

TD107b Var. Test / Dummy Pair With Odd Orange Defacement Line Mint NH

$ 8.79 $ 5.27

J96 8c low shift into frame, f-vf MNH

$ 0.87 $ 0.52

J96 8c high shift into frame, f-vf MNH

$ 0.87 $ 0.52

J99 50c low shift, vf MNH

$ 0.87 $ 0.52

1265 Magna Carta-black shift to L, w/normal vf MNH

$ 0.87 $ 0.52

1338A vf MNH,1622(u) ink bleed efos, 1338A line pair, vf MNH

$ 0.87 $ 0.52

1820a, Mint VF NH 18¢ Imperforate Pair Error - Stuart Katz

$ 52.8 $ 31.67

1726, Mint NH 13¢ Misperfed Error Zip Block of Four - Stuart Katz

$ 39.6 $ 23.76

1842a, Mint VF NH 15¢ Imperforate Pair Error - Stuart Katz

$ 28.16 $ 16.89

956, MNH 3¢ Great Misperfed Error - Chaplains - Stuart Katz

$ 17.55 $ 10.53

1443a, Mint NH 8¢ Very Scarce Misperfed Error Block - Stuart Katz

$ 57.2 $ 34.32

1729a, Mint VF NH 13¢ Imperforate Pair Error - Stuart Katz

$ 35.2 $ 21.12

2113a, Mint VF NH 22¢ Imperforate Pair Error - Stuart Katz

$ 30.8 $ 18.48

US Scott #16T44b Revenue BLK/6, Imperf Between Verticals Prs (2) SCV 0+! (SK)

$ 87.12 $ 52.27

KAPPYSSTAMPS RECALLED LEDGENDS 2870 BILL PICKETT ERROR SHEET & 2869 REG SHEET

$ 87.99 $ 52.79

Collectible Stamp - Scott # 1615 Drum - Error Stamp Used (1976)

$ 4.18 $ 2.5

(1089) Scott#2870, Recalled Ledgends Sheet, w/envelope, Free Shipping

$ 46.2 $ 27.72

US 1579 Ghirlandio 10c Plate Block of 12 EFO multiple ink stains

$ 5.27 $ 3.16

3066a JACQUELINE COCHRAN BLACK OMITTED STAMP MINT NH (BX 1038)

$ 52.79 $ 31.67

1727, Mint NH 13¢ Misperforation Error Pair - Sound Recording - Stuart Katz

$ 39.6 $ 23.76

Error 2401 Imperforate Printer's Waste Mint NH OG Extra Fine LB

$ 220 $ 132

2421a, MNH 25¢ Bill of Rights Black Color Omitted ERROR Plate Block Stuart Katz

$ 611.6 $ 366.96

TURKMENISTAN # 8 DOUBLE ERROR

$ 0.08 $ 0.05