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EFO 1036 FOLDOVER CREATES DRAMATIC "CRAZY PERFS" IN THIS BLOCK OF FOUR

$ 171.6 $ 102.96

US #89 10 cent Green Washington grill used fresh perf. shifted down

$ 87.95 $ 52.77

2280 coil strip of 4 MISPERF ERROR NH from 1988

$ 18.48 $ 11.08

1003 Brooklyn Misperf ERROR OG Mint EFO block of 4 from 1951

$ 51.92 $ 31.15

1945a, MNH 20c CACTUS - HUGE MISPERFORATION ERROR BLOCK - AMAZING! - Stuart Katz

$ 132 $ 79.2

United States, 1946 Christmas Seal Lamplighter, Single, Color Error, MNH

$ 14.59 $ 8.75

U.S. Stamps, Scott # 1618, Coil Mis-cut Error, MNH

$ 17.59 $ 10.55

Error 1529 variety US 10¢ Skylab color shift sheet of 50 Mint NH 1974.

$ 66 $ 39.6

#1511 VAR. "10¢ ZIPCODE" MAJOR COLOR SHIFT ERROR BLOCK OF 10 BP3259

$ 138.6 $ 83.16

#1579a "CHRISTMAS" BLOCK OF 4, IMPERF MAJOR ERROR CV 0.00 BQ1697

$ 286 $ 171.6

US, 1933 Men Pulling Sled, Omitted Green Error, 33-1.1 (Green's), WX68, MNH

$ 21.63 $ 12.98

1355d - 6c Disney - Black Color Omitted - NH Plate Block of 4 - APS Cert

$ 12320 $ 7392

US #117 12c Green 1869 Pictorial used fresh perf. shift

$ 68.64 $ 41.18

MISALIGNED PERF Error - Scott 1151 SEATO Plate Block MNH OG T3954

$ 6.15 $ 3.69

U.S. #1355a RARE Plate Block - 1968 6c Disney, Ocher Omitted

$ 440 $ 264

US #1925 Year of the Disabled 1981 18c plate block EFO color shift gold outline

$ 1.75 $ 1.05

#2255 7.6c Carreta EFO Misperforated Pair MNH OG "Include New Mount"

$ 8.8 $ 5.28

1732-33, Misperfed James Cook 13¢ Error Sheet of 50 - Stuart Katz

$ 523.6 $ 314.16

S7 25c savings, grey-lilac error, w/normal, VF/XF MNH

$ 61.59 $ 36.95

2280e, BLACK TREES COIL PAIR Variety - VF NH With Normal Pair - Stuart Katz

$ 74.8 $ 44.88

U. S. #1894 (US714) EFO Pr Flag over Supreme Court, MNH, VF

$ 11 $ 6.6

1187, MNH Full Color Reverse Offset Printed Under Gum Error! - Stuart Katz

$ 59.4 $ 35.64

#1699a "CLARA MAAS" 13¢ HORIZONTAL PAIR, IMPERF MAJOR ERROR BQ5254

$ 330 $ 198

1622b Error Scarce Imperf VF-XF OG NH SCV. 0 (JH 4/4/2020)

$ 175.12 $ 105.07

KAPPYSSTAMPS SF202 SCOTT 1895a STRIP OF 5 IMPERFATE MISCUT A MAJOR ERROR

$ 263.99 $ 158.39

Coin Stamp Old American Insurance Company 10 Cent Gold

$ 5.27 $ 3.16

US, 1925 Christmas Seal Block, FREAK, Skipped Perfs, WX35, Perf 12 1/2 4S, MNH

$ 5.79 $ 3.47

US, 1956 Christmas Seal Printer Mark & Flaws, Perf 13:12 1/2 x 12 1/2, MNH

$ 16.35 $ 9.81

USA 1954 SC# 1042 2 BLOCKS OF 8 & 10 WITH PRINTING ERRORS VARIETY

$ 351.99 $ 211.19

2276, MNH 22¢ Fireworks With Large Red Color Shift Great EFO - Stuart Katz

$ 39.6 $ 23.76

Scott #1445 Xmas Partridge Pl Blk 12; 8¢ IMPERFECTION Causing Yellow "Shadow"

$ 13.15 $ 7.89

#2114 VAR. SHEET WITH MAJOR PERF SHIFT ERROR...TOP ROW NO PRICE...MNH

$ 875.6 $ 525.36

#2136a 25c Bread Wagon EFO Imperforated Pair MNH OG VF "Includes New Mount"

$ 14.08 $ 8.44

#1610 VAR MAJOR COLOR SHIFT ERROR CANDLESTICK Mint

$ 44 $ 26.4

1305 - 6c Huge Misperf Error / EFO Pair "F.D.R." "Franklin D. Roosevelt" Mint NH

$ 6.85 $ 4.11

EFO US Scott #2072 MINT NEVER HINGED VERTICAL ANGLE MISPERF. CHANGE OF DESIGN.

$ 10.51 $ 6.3

TD130C Single Test Stamp

$ 44 $ 26.4

1436 Var, LARGE MISPERFORATION ERROR 8¢ EMILY DICKINSON

$ 35.15 $ 21.09

1433 - 8c Color Shift Error / EFO "John Sloan" Mint NH

$ 7.03 $ 4.21

2032-2035 Hot Air Ballooning Error MNH 20c Sheet Misperf color shifted left

$ 189.2 $ 113.52

US #1895a, 20¢ Flag Over Supreme Court Complete set of Plate #'s 1-14 except 2&4

$ 14.08 $ 8.44

702 Huge Color Shift Error / EFO "Red Cross" Pl# Single Mint LH

$ 4.12 $ 2.47

SC #2017a "20¢ TOURO SYNAGOGUE" IMPERF PAIR MAJOR ERROR, PFC, *RARE*! garyposner

$ 1047.2 $ 628.32

C90, 31¢ Airmail SPECTACULAR Two Way Misperforated Error Mint NH - Stuart Katz

$ 110 $ 66

RIV: US MNH 2225b EFO Plate #"31" SEE PICS Omnibus mint pnc5 error dull gum 2N

$ 121.44 $ 72.86

#2280AV IMPERF COIL STRIP (PHOSPHOR TAG) BM2498

$ 12.32 $ 7.39

4c Abraham Lincoln Assassination Bullet Hole Error Freak Oddity Stamp MINT #1282

$ 7.03 $ 4.21

EFO Booklet pane miscut with Plate #, ZIP slogan #1213a, 5 cent, MNH

$ 4.35 $ 2.61

US Scott 102 1875 Error in printing Double Impression

$ 2200 $ 1320

US - 1981 - (18 Cents) Purple Non-Denominated Eagle B Stamp 1820 Misperf Pair NH

$ 14.95 $ 8.97

SCOTT #2470-2474b MINT NH WHITE "25" CENTS MISSING ERROR SINGLE STAMPS SET SE1

$ 24.33 $ 14.59

U.S. EFO'S 2259a  MNH Strip of 3, Major Misperf, Nice!!

$ 3.3 $ 1.97

1394 8cent Eisenhower Sheet Of 100 Misperf. Mint Never Hinged

$ 527.12 $ 316.27

2075, RARE ERROR Sheet of 50 20¢ Stamps Credit Union Mint NH - Stuart Katz

$ 440 $ 264

#2281D IMPERF COIL PAIR BM2499

$ 33.88 $ 20.32

US, 1947 Christmas Seal Block, Fly-spec Flaw, Snow on Christmas Tree, WX135, MH

$ 10.19 $ 6.11

Benjamin Franklin 1861 30 cent Stamp Scott's Guide #71 Printers Block/ Plate!

$ 131.99 $ 79.19

1686o, Denomination Missing From Position A Error 13¢ Bicentennial - Stuart Katz

$ 171.6 $ 102.96

1394d, Mint NH 8¢ Red And Blue Gray Colors Missing Error - Stuart Katz

$ 39.6 $ 23.76

EFO 1432 TWO DRAMATIC GREY INK COLOR SHIFTS (WITH NORMAL FOR COMPARISON)

$ 48.4 $ 29.04

EFO 1078 MISPERF CREATES DESIGN CHANGE -- "WILDLIFE CONSERVATION" MISSING BOTTOM

$ 26.4 $ 15.83

EFO 1485 ANGLED PERF SHIFT NO VA.UES ON BOT STAMPS- "JEFFERS' HEADACHE" - BLK4

$ 52.8 $ 31.67

EFO REVENUE R7c PRE-PRINTING PAPERFOLD HORIZONTAL THRU GEORGE'S NOSE!

$ 35.2 $ 21.12

Stamped Envelope USA Error Invert & Location

$ 8.8 $ 5.28

R34c 10 cent Contracts with double perforations.

$ 17.55 $ 10.53

#1305EJ IMPERF LINE PAIR-DRY GUM BM2070

$ 184.8 $ 110.88

US SCOTT #1631b STRIP/3 Imperf Error! "SPIRIT of 76", PF Certified, garyposner!

$ 726 $ 435.6

2088, DOUGLAS FAIRBANKS - RARE MISPERFED ERROR - WOW

$ 31.64 $ 18.98

US SCOTT #U617a Ultramarine Omitted RARE (DFP 3/2/20)

$ 440 $ 264

1991 FDC ,DISTRICT OF COLUMBIA, CANCELLATION ERRORS

$ 439.99 $ 263.99

804, MNH 1¢ Washington Misperfed ERROR Sheet of 100 Stamps - Stuart Katz

$ 286 $ 171.6

US Sc# 1591 Var *MINT OG NH { MISPERF ERROR "USE ZIP CODE INSIDE" } BLOCK OF 10

$ 57.2 $ 34.32

WASHINGTON 2 CENT INK SMEAR 1918 COVER OPC OWEN PUBLISHING PA TO COLORADO

$ 13.2 $ 7.91

1500, 6¢ Electronics Color Shift ERROR With Normal Mint NH WoW - Stuart Katz

$ 57.2 $ 34.32

EFO 1394 STRONG GHOST TAGGING IN THIS PLATE BLOCK OF FOUR

$ 22 $ 13.2

1910, Color Shift ERROR Sheet of 50 18¢ Red Cross Stamps Mint NH - Stuart Katz

$ 259.6 $ 155.76

US #4806 Inverted Jenny Sheet of Six w/ Excess Blue Ink Freak Error

$ 12.8 $ 7.68

1753 13 Cent French Alliance Color Variety

$ 21.95 $ 13.17

#1757 VAR 13c 1978 CAPIEX ISSUE PLATE BLOCK MAJOR COLOR SHIFT ERROR BU9454

$ 154 $ 92.4

2073, Mint NH 20¢ Misperfed Error Carter Woodson - Stuart Katz

$ 21.95 $ 13.17

1447 8 Cent Peace Corps Nice Color Shift.

$ 13.15 $ 7.89

#2280 25c Yosemite Flag Pair EFO Flag Inking Error MNH OG VF Block Tagging

$ 17.6 $ 10.56

#1618b 13c Liberty Bell Misperforated Strip of 5 w/Joint Line Pair MNH OG VF

$ 15.84 $ 9.5

1939 US 3c Jefferson Scott# 842 ERROR (HORIZONTAL PERFS) USED

$ 11 $ 6.6

US SCOTT #1488a ORANGE Color Omitted, SCV 0.00, So Cool from garyposner!

$ 176 $ 105.6

947 Postage Stamp Centenary Ink Smear ERROR MNH 3 c Sheet of 50 1947

$ 7.04 $ 4.22

INVERTED IMPRINT ON FLAG FOREVER STAMPS - FULL SHEET OF 10 - SCOTT #CVP108 ERROR

$ 17.59 $ 10.55

US ERROR Stamps: #2913a Flag Porch. Imperf & miscut PS7 #11111 PNC MNH 0.++

$ 351.12 $ 210.67

Scott #730 Chicago Century of Progress Sheet

$ 6.15 $ 3.69

US Stamp Scott# 1856c Sinclair Lewis Imperf. Pair 1985 Block of 8

$ 25.34 $ 15.2

Scott # 2609b...NH...29c Flag ..Imperf Between Pair..Mint OG NH...Cat 75.00

$ 20.19 $ 12.11

1928 Beacon Air Post Low-flying Plane Blue Vignette Design Shift Stamp MNH! #C11

$ 17.59 $ 10.55

Scott # 1203 & 1204 D. HAMMERSKOLD-Plate Blocks-MINT-NH-OG-VF

$ 1.75 $ 1.05

#75L1 & #75L5 1844 Hale & Co, Local Assortment Mint & Used

$ 212.52 $ 127.51

1729 Christmas 1977 Washington at Valley Forge Error EFO NH Too Green Color

$ 8.8 $ 5.28

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

$ 17.52 $ 10.51

US SCOTT #5312-5315a b, NH JOHN LENNON Sheet/16, Die Cutting Omitted, garyposner

$ 1320 $ 792

US - 1954 - 8 Cents Dark Violet Blue & Carmine with Color Shift # 1041 Mint F-VF

$ 8.78 $ 5.26

US #810var 5¢ James Monroe Complete sheet of 100 -full double paper varieties

$ 475.2 $ 285.12

US, 1943 Christmas Seals, Printer Mark S, Black Offset Register, WX113, MNH

$ 21.63 $ 12.98