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US 1858 18c. George Mason MNH Mint NH EFO perforation shift misperf

$ 3.51 $ 2.1

US SCOTT #1474a YELLOW Litho. Omitted! SCV 5.00, ACool Item from garyposner!

$ 143 $ 85.8

#2482a "BOBCAT" BLACK ENGRAVING OMITTED ERROR BT4251

$ 99 $ 59.4

#1338 Misperforated Margin Block of Four 6 cent Flag mint NH OG

$ 26.35 $ 15.81

1356, 6¢ Scarce Color Shift Error With Normal Mint NH - Stuart Katz

$ 39.6 $ 23.76

1863, Diagonal Misperfed Error Block of Six 22¢ Stamps Mint NH - Stuart Katz

$ 44 $ 26.4

#1370b "GRANDMA MOSES" ENGRAVED BLACK OMITTED MAJOR ERROR HV7440

$ 440 $ 264

3205 Sylvester & Tweety Imperf Pane "Looney Toons" Mint NH

$ 9.67 $ 5.8

Season's Greetings 3 Missing Perfs Perforations Error EFO Stamps MINT #2028 2030

$ 4.39 $ 2.63

US Scott #3055a imperforated Plate #1111 strip of 6 Mint NH OG Extra Fine

$ 1100 $ 660

US Scott #2632 block of 4 - No slit Mint Extra Fine

$ 1144 $ 686.4

EFO 1734 PERF SHIFT GROUP OF FOUR DIFFERENT EXAMPLES WITH NORMAL TO COMPARE

$ 35.2 $ 21.12

1390a, Pre Print Paper Fold & Color Shift Error Full Sheet - Stuart Katz

$ 352 $ 211.2

1363a, Mint VF NH With Yellow Color Omitted Error With Normal - Stuart Katz

$ 35.2 $ 21.12

2979a, Mint NH 32¢ Large RARE Misperf Error Plate Block - Stuart Katz

$ 132 $ 79.2

830, Mint NH 30¢ Dramatically Over Inked Error Block With Normal - Stuart Katz

$ 176 $ 105.6

US EFO Scott #3122 32c Statue of Liberty Booklet 2 singles misperf used!!

$ 4.84 $ 2.9

US EFO Scott #1895 20c Flag over Supreme Court Coil pair misperf used!!

$ 4.84 $ 2.9

US EFO Sc 651 Rogers Clark Vignette Shift Down Over Lettering Plate Block MNH

$ 87.99 $ 52.79

1035, Mint NH 3¢ Large Misperf Error Pair - Just Amazing! - Stuart Katz

$ 17.55 $ 10.53

1414, MNH 6¢ Color Shift Error Zip Block of Four Stamps - Stuart Katz

$ 39.6 $ 23.76

2065, MNH 20¢ HUGE Perforation Shift Error Martin Luther - Stuart Katz

$ 26.35 $ 15.81

2877, MNH 3¢ Large Perforation Shift Error Pair Blue Bird - Stuart Katz

$ 17.55 $ 10.53

C90, MNH 31¢ Two Way Misperf Shift Airmail Plane Stamp - Stuart Katz

$ 21.95 $ 13.17

774, Mint NH 3¢ Misperforated Error Hard to Find! - Stuart Katz

$ 21.95 $ 13.17

2181, MNH 23¢ Ink Smear Block of 30 Stamps Scarce Error! - Stuart Katz

$ 39.6 $ 23.76

2011, Misperfed Error Block of Four 20¢ Stamps Mint NH - Stuart Katz

$ 30.8 $ 18.48

2036, Mint NH 20¢ With Part Color Omitted Error Block - Stuart Katz

$ 132 $ 79.2

1510 10¢ Jefferson Memorial misperf MNH

$ 1.45 $ 0.87

1856 14¢ Lewis misperf MNH

$ 1.32 $ 0.79

#U536b ALBINO BL5163

$ 17.16 $ 10.29

1604, Mint NH 28¢ Misperforation Error Zip Block - Remote Outpost - Stuart Katz

$ 110 $ 66

1867, MNH 39¢ Diagonal Misperforation Error Block of Eight Stamps - Stuart Katz

$ 132 $ 79.2

1857, Mint NH 17¢ Misperforation Error Block of Ten Stamps - Stuart Katz

$ 132 $ 79.2

1291, Mint NH 30¢ Two Way Misperforation Error Zip Block of Four - Stuart Katz

$ 110 $ 66

833, Mint XF NH With Major Shift Of The Vignette WoW - Stuart Katz

$ 44 $ 26.4

C92a, Large Color Shift Error Wright Brothers Plate Block Mint NH - Stuart Katz

$ 110 $ 66

US AIRMAIL #C98,40C STAMP PHILLIP MAZZEI SHEET OF 50 MNH OG FULL GUTTER SNIPE

$ 132 $ 79.2

1436, Large Color Shift Error Part Sheet of 40 Stamps Mint NH - Stuart Katz

$ 352 $ 211.2

U.S. Stamps, Scott # 704, Blk of 6, + 3, MNH, Error

$ 2.63 $ 1.57

SCOTT 2915Ah 1996 32 CENT FLAG AND PORCH ISSUE IMPERF PAIR MNH OG CAT !

$ 22.88 $ 13.72

1934b Mint VF NH Brown Color Omitted Block Error With PFC Cert Stuart Katz

$ 699.6 $ 419.76

1519, Huge Red Color Shift Error Pair Mint VF NH 10¢ - Stuart Katz

$ 83.6 $ 50.16

US EFO Scott #1036 4c Lincoln Misperf/Imperf between single USED!!

$ 4.84 $ 2.9

806 Var, Fold Over Sheet Creates Full Gutter Pair Error - RARE! - Stuart Katz

$ 171.6 $ 102.96

1033 2c Misperf Error / EFO "Thomas Jefferson" Mint NH

$ 6.41 $ 3.84

#C98 VAR. MAJOR COLOR SHIFT ERROR BM8198

$ 19.8 $ 11.88

USA #1560a VF/NH Black Inscriptions Omitted

$ 104.72 $ 62.83

#1953 -2002 50 STATE BIRDS & FLOWERS Full mint sheet of 50 Freaks GUTTER SNIPE

$ 26.35 $ 15.81

US C104 1983 Airmail Plate Block MNH US 28c 1984 Olympics EFO Tagging Error

$ 4.4 $ 2.64

1622Ce, XF Mint NH 13¢ Flag Vertical Imperforate Pair ERROR - Stuart Katz

$ 52.8 $ 31.67

1734, Wonderful Misperfed Complete Sheet of 150 Stamps 13¢ Penny - Stuart Katz

$ 748 $ 448.8

2466a, XF NH 32¢ Ferryboat Imperforate Error Coil Pair - Stuart Katz

$ 259.6 $ 155.76

1932 Washington SC#U436 U93 PURPLE 2 CENT DOUBLE IMPRESSION ON BACK ERROR

$ 17.52 $ 10.51

2523b Imperf Pair 29¢ Flag Over Mount Rushmore EFO MNH 1991

$ 11.44 $ 6.86

UNITED STATES STAMPS WITH LINE VARIETY SMALL LOTE (A2875)

$ 0.88 $ 0.52

#2915A PNC #55555A BROWN SHIFTED ON TOP OF RED BL3631

$ 66 $ 39.6

1148, Mint NH Misperforation Error 8¢ Missing from Left Two Stamps - Stuart Katz

$ 66 $ 39.6

1472, Mint NH 8¢ Three Different Misperforation Errors - Santa - Stuart Katz

$ 52.75 $ 31.65

1158, Mint NH 4¢ Misperforation Error Pair - Washington Monument - Stuart Katz

$ 43.95 $ 26.37

1455, Mint NH 8¢ Large Color Shift Error Pair- Stuart Katz

$ 13.15 $ 7.89

1294, Mint NH Misperforation Error Top Margin Copy - Stuart Katz

$ 17.55 $ 10.53

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

$ 26.4 $ 15.83

1289, Mint NH 20¢ Misperforation Error Block of Four - Marshall - Stuart Katz

$ 48.4 $ 29.04

2178, Mint NH 17¢ Misperforation Error Block of Four Stamps - Stuart Katz

$ 44 $ 26.4

1525, Mint NH 10¢ Misperforation Error Margin Pair - VFW - Stuart Katz

$ 35.2 $ 21.12

853, Mint NH 3¢ Misperforation Error Pair - NY World's Fair - Stuart Katz

$ 26.35 $ 15.81

1029, Mint NH 3¢ Misperforation Error Pair Showing Gutter At Top - Stuart Katz

$ 66 $ 39.6

1525, Mint NH 10¢ Misperforation Error With Normal - Stuart Katz

$ 30.8 $ 18.48

1323, Mint NH 5¢ Misperforation Error National Grange - Stuart Katz

$ 21.95 $ 13.17

2154, Mint NH 22¢ Misperforation Error WWI With Normal - Stuart Katz

$ 22 $ 13.2

2093, Mint NH 20¢ Misperforation Error Plate Block of Four - Stuart Katz

$ 44 $ 26.4

US #U350a EFO: Slate brown color error, unused

$ 1070.96 $ 642.57

1381, Mint NH 6¢ HUGE Color Shift Error Block With Normal - Stuart Katz

$ 220 $ 132

MAJOR CUTTING ERROR

$ 171.6 $ 102.96

805, Multiple Pre Print Paper Folds Error In Block of 20 - Stuart Katz

$ 83.6 $ 50.16

1460, Blue Color Shifted to the Left Error Block of Ten Error - Stuart Katz

$ 78.32 $ 46.99

1580 10 Cent Christmas Color Shift

$ 15.79 $ 9.47

774, Mint NH 3¢ Misperforation Error Block of Four RARE! - Stuart Katz

$ 83.6 $ 50.16

1857, Mint NH 17¢ Two Way Misperforation Error Block of Four - Stuart Katz

$ 83.6 $ 50.16

1042, Mint NH 8¢ Misperforation Error Block of Four Liberty Stamps - Stuart Katz

$ 79.2 $ 47.52

1291, Mint NH 30¢ Two Way Misperforation Error Block of Four - Stuart Katz

$ 83.6 $ 50.16

USA APC/CVP/ATM - overprint ERROR stamps on USPS Form3817 (#299) rate change

$ 17.51 $ 10.5

1384, Mint NH 6¢ Misperfed Major Error Stamp and a half! - Stuart Katz

$ 52.75 $ 31.65

#2136c 25c Bread Wagon EFO Imperforated Pair MNH OG

$ 8.8 $ 5.28

1179, Mint NH 4¢ Terrific Misperfed Civil War With Normal Stamp - Stuart Katz

$ 17.55 $ 10.53

2403, Mint NH 25¢ Diagonal Perf Shift North Dakota Error - Stuart Katz

$ 26.35 $ 15.81

2512, Mint NH 25¢ Perf Shift Error - Grand Canyon - Stuart Katz

$ 17.55 $ 10.53

C81, Mint NH 21¢ Color Shifted Error Mail Early Block of Six - Stuart Katz

$ 154 $ 92.4

1420, Mint NH 6¢ Misperforation Error Zip Block of Four - Stuart Katz

$ 171.6 $ 102.96

US #1826a 15¢ Galvez COLORS MISSING ERROR NH, normal stamp at right

$ 352 $ 211.2

1151, 4¢ Large Misperf Error Mint NH Seato Stamp -- Stuart Katz

$ 26.35 $ 15.81

1408, 6¢ Large Misperf Error Mint NH Stone Mountain - Stuart Katz

$ 26.35 $ 15.81

EFO 1485 GOLD SHIFT CREATES A "FROSTY FOREHEAD" FOR JEFFERS - BLOCK OF FOUR

$ 35.2 $ 21.12

2764b, 29¢ Misperforated Booklet Of Four Error Panes - Stuart Katz

$ 105.55 $ 63.33

3843b, Mint RARE IMPERFORATE STRIP OF 4 - MAJOR ERROR! Cat 0.00

$ 259.6 $ 155.76

EFO REVENUE R11c PRE-PRINTING PAPERFOLD HORIZONTAL

$ 39.6 $ 23.76

#1895a 20c Flag EFO Misperforated Pair MNH OG "Include New Mount"

$ 5.28 $ 3.16

1986 5¢ HUGO BLACK TAGGING OMITTED ERROR 2172a, BLOCK OF 6, SHOWING TRANSITION!

$ 220 $ 132

#2518, #2529 IMPERF PAIR ERROR BP8488

$ 110 $ 66