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#R72a VAR. ".00 MANIFEST" W/ PRE-PRINT PAPER FOLD ERROR BP0075

$ 35.2 $ 21.12

1950, Large Misperforated ERROR 20¢ Franklin Roosevelt Plate Block - Stuart Katz

$ 44 $ 26.4

807, MLH 3¢ Fold Over Block Shows Almost a Full Gutter Pair - Stuart Katz

$ 66 $ 39.6

#R5 VAR. "2¢ BANK CHECK W/ WIDE PRE-PRINT PAPER FOLD ERROR BP0046

$ 30.8 $ 18.48

#R58 VAR. "50¢ LIFE INSURANCE" W/ PRE-PRINT PAPER FOLD ERROR BP0088

$ 33 $ 19.8

4640b Four Flags Strip of four Die-cut Omitted Error MNH CV 0.00

$ 70.35 $ 42.21

#R53 VAR. "40¢ INLAND EXCHANGE" W/ PRE-PRINT PAPER FOLD ERROR BP0096

$ 33 $ 19.8

#R46 VAR. "25¢ INSURANCE" W/ PRE-PRINT PAPER FOLD ERROR BP0081

$ 33 $ 19.8

1276 - 5c Misperf Error / EFO "Christmas Angel" Mint NH

$ 6.85 $ 4.11

US Scott #1926a mint never hinged, Black Inscription omitted, 1981 St Vincent Mi

$ 70.35 $ 42.21

US Scott #2115a Electric Eye Pair, IMPERFORATE & MISCUT ERROR, OG-NH, garyposner

$ 123.2 $ 73.92

#2048 // #2051 "13¢ OLYMPICS" MAJOR FOLD-OVER ERROR CREATING CRAZY PERFS BS546

$ 439.12 $ 263.47

1115, Mint NH 4¢ Lincoln Misperf Shift Error Block of Four Stamps - Stuart Katz

$ 132 $ 79.2

2110, Misperfed Error 22¢ Stamp Jerome Kern Mint NH - Stuart Katz

$ 17.55 $ 10.53

COLOR OMITTED AMERIPEX STAMP (2198b) ON 2021 OFFICIAL ATA CACHETED GASS COVER!

$ 17.59 $ 10.55

1252, Mint NH 5¢ Large Misperf Error Plate Block PL# Captured - Stuart Katz

$ 132 $ 79.2

1991-93, OFFICIAL MAIL 23(C) RED, BLUE AND BLACK, IMPERF PAIR , SC.#O148, MNH

$ 118.8 $ 71.28

#R59 VAR. "50¢ MORTGAGE" W/ PRE-PRINT PAPER FOLD ERROR BP0086

$ 39.6 $ 23.76

#R60 VAR. "50¢ ORIGINAL PROCESS" BLUE W/ PRE-PRINT PAPER FOLD ERROR BP0097

$ 41.8 $ 25.08

1392 - Misperf Error/ EFO "American Buffalo" Mint NH

$ 7.03 $ 4.21

C82 Scarce Misperf Error / EFO Pair "Jet Airliner" Mint NH

$ 11.43 $ 6.85

1381 Multi Color Shift ERROR PL# Block of Four 6¢ Baseball - Stuart Katz

$ 264 $ 158.4

U.S. #1370b Mint NH w/Cert - 1969 6c Grandma Moses w/ Black Omitted

$ 245.52 $ 147.31

#2133 12.5c Pushcart Coil Pair EFO Misperforated MNH OG VF "Includes New Mount"

$ 13.2 $ 7.91

1554a Error Imperf Pair Rare! VF-XF OG NH SCV. 0 w/PFC cert (JH 4/4)

$ 464.64 $ 278.78

1769a, Mint VF NH 15¢ Imperforate Pair Error - Stuart Katz

$ 52.8 $ 31.67

CE2, Mint NH 16¢ Eagle Color Shift Error Block of 4 - Fantastic! - Stuart Katz

$ 52.8 $ 31.67

740, Mint NH 1¢ Paper Fold National Park - Scarce Error - Stuart Katz

$ 35.2 $ 21.12

1735a, Mint VF NH 15¢ Imperforate Pair Error - Stuart Katz

$ 48.4 $ 29.04

1065, Mint NH 3¢ Misperfed Error Plate Block RARE! - Stuart Katz

$ 39.6 $ 23.76

2111a, Complete Imperforate Error Sheet of 100 D Stamps MNH CV 50 Stuart Katz

$ 875.6 $ 525.36

2759a, MNH 29¢ Plate Block With RARE Black Color Shift Error Horses Stuart Katz

$ 171.6 $ 102.96

US Scott #3982a block unslit between Mint Extra Fine

$ 880 $ 528

2224, MNH 22¢ Liberty Massive Ink Smear Error Sheet of 50 Stamps - Stuart Katz

$ 132 $ 79.2

1510, Mint NH 10¢ Misperf Error PB of 8 With PL# Captured - Stuart Katz

$ 30.8 $ 18.48

Miscut US Booklet 102 with pasteup pane

$ 66 $ 39.6

1953-02, MNH 20¢ VERY RARE Misperfed Error Sheet of 50 Stamps - Stuart Katz

$ 523.6 $ 314.16

US EFO Scott #2915a 32c Flag over porch coil stamp, major perf shift/misperf!

$ 4.84 $ 2.9

1329, Mint NH 5¢ Misperf Shift Error Block of Four of Stamps - Stuart Katz

$ 79.2 $ 47.52

510, Mint NH 10¢ Extreme Dry Printing Error Plate Block of Six - Stuart Katz

$ 220 $ 132

1527, MNH 10¢ Block of Eight Diagonal Misperfed Stamps With PL# * Stuart Katz

$ 220 $ 132

US 1110 4c SIMON BOLIVAR Champion of Liberty MNH mint nh EFO misperf perf shift

$ 2.63 $ 1.57

EFO 854 CORNER SHEET FOLDOVER CREATES "CRAZY PRFS"

$ 35.2 $ 21.12

2466a - 32c Imperf & Miscut Error Pr Cat 5+ "Ferryboat" Mint NH

$ 219.99 $ 131.99

US EFO Scott #2129a 8.5c Tow Truck Non-profit Coil single Mis-perf!

$ 4.84 $ 2.9

#2280 VAR (7) DIFF ERRORS MOUNTED ON 3 PAGES "FLAG OVER YOSEMITE" BT2539

$ 286 $ 171.6

US Sc 538 MNH. 1919 1c Washington, Vertical Margin Pair imperf at top

$ 26.37 $ 15.82

1910, 18¢ Red Cross stamps With HUGE Color Shift Error - Mint NH - Stuart Katz

$ 26.35 $ 15.81

MOMEN: US STAMPS #2760 VAR. PANE MOSTLY IMPERF MINT OG NH 4 KNOWN LOT #72543

$ 352 $ 211.2

1597e, Complete Imperforate Error Sheet of 100 Stamps CV 00+ - Stuart Katz

$ 660 $ 396

EFO 996 INK STARVATION IN TWO RIGHT STAMPS MARGIN BLOCK OF FOUR

$ 30.8 $ 18.48

1879a, 18c Flower Issue - LARGE MISPERFORATION SHIFT - RARE COMPLETE SHEET OF 48

$ 963.6 $ 578.16

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

$ 13.19 $ 7.91

1394, Large Misperf Error 8¢ Ike Pair of Stamps Mint NH -- Stuart Katz

$ 13.2 $ 7.91

EFO 623 OFFSET ON GUMSIDE Mint NH

$ 35.2 $ 21.12

SCOTT #1069 3c SOO LOCKS, PERFS SHIFTED DOWN

$ 19.8 $ 11.88

RW46, Big Color Shift Duck Stamp Error Pane of 30 WoW - Stuart Katz

$ 1980 $ 1188

1432, Mint NH 8¢ Unbelievable Color Shift Error Block With Normal - Stuart Katz

$ 105.6 $ 63.35

804, Mint NH 3¢ Tape Splice Error Sheet of 100 Stamps - Stuart Katz

$ 131.12 $ 78.67

2015, Mint NH 20¢ Misperfed Error Plate Block of Four PL# Captured - Stuart Katz

$ 110 $ 66

EFO, ERROR Collection of Color Shifts & Misperf Stamps ALL Mint NH

$ 198 $ 118.8

#1338GH NH XF IMPERF COIL PAIR BM1910

$ 25.52 $ 15.31

US #1031, plate block, with EFO precancel Colorado Springs, Colorado.

$ 3.52 $ 2.11

2277 E Rate Earth Nice Color Shift.

$ 12.27 $ 7.36

1509 Color Shift Pair

$ 12.1 $ 7.26

US#2618a

$ 122.32 $ 73.39

#1460 6c 1972 Olympic Games Red Ring Error MNH OG VF

$ 7.04 $ 4.22

1910, 18¢ Tremendous Misperf With Gutter Error Sheet of 50 Stamps - Stuart Katz

$ 660 $ 396

drbobstamps US Scott #3280B Mint NH Error Stamp Cat 0

$ 68.64 $ 41.18

529, Imperforate at Top Plate Block of 20 Stamps ERROR - Stuart Katz

$ 396 $ 237.6

US # 1305 *MINT OG H* { DRAMATIC MISPERF ERROR /EFO STRIP } 6c ROOSEVELT OF 1968

$ 5.23 $ 3.14

US Scott #2872D Quadruple impression of blue Mint NH OG SCV 0

$ 616 $ 369.6

US#2143a

$ 400.4 $ 240.23

1110, Mint NH 4¢ Large Misperf Error Plate Block PL# Captured - Stuart Katz

$ 110 $ 66

US Stamp #409 MH Mint Hinged Unused - EFO Pair - Ink Smear Error Freak Oddity

$ 20.23 $ 12.13

2096, Mint NH 20¢ Misperf Shift Error Block Showing Gutter - Stuart Katz

$ 171.6 $ 102.96

1632, Mint NH 13¢ Large Color Shift Error Margin Copy - Stuart Katz

$ 66 $ 39.6

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

$ 22 $ 13.2

1860, Mint NH 20¢ Misperforation Error Margin Pair WoW - Stuart Katz

$ 44 $ 26.4

US Scott #1874a mint never hinged transitional color missing pair, unique error

$ 43.95 $ 26.37

C85, 11¢ Two Way Misperfed Error Airmail With Normal Mint NH - Stuart Katz

$ 35.2 $ 21.12

1868, Mint NH 40¢ Diagonal Misperf Error Margin Block of Four - Stuart Katz

$ 83.6 $ 50.16

1525, Mint NH 10¢ Two Way Misperforation Error Block of Four - Stuart Katz

$ 74.8 $ 44.88

IMPERF 20¢ OFFICIAL PAIR, EXTREMELY RARE #O135a, MNH CURRENT RETAIL ,000

$ 594 $ 356.4

US 921 5c Overrun Country Korea Sheet of 50, some separation, "Korpa" Error EFO

$ 32.56 $ 19.53

1203, MNH 4¢ Great Misperfed Error - Hammarskjold - Stuart Katz

$ 17.55 $ 10.53

1333, Mint NH 5¢ Scarce Misperfed Error Pair - Better Cities - Stuart Katz

$ 28.99 $ 17.39

1140, Mint NH 4¢ Scarce Misperfed Error Pair - Jefferson - Stuart Katz

$ 35.15 $ 21.09

1731, Mint NH 13¢ Misperfed Error Plate Block of Four PL# Captured - Stuart Katz

$ 52.8 $ 31.67

1340, Mint NH 6¢ TWO Scarce Misperfed Error - Hemisfair - Stuart Katz

$ 35.15 $ 21.09

1335, Mint NH 5¢ Scarce Misperfed Error Pair - Eakins - Stuart Katz

$ 35.15 $ 21.09

C83a, Mint VF NH 13¢ Imperforate Pair Error - Stuart Katz

$ 44 $ 26.4

1058a, Mint NH 4¢ Lincoln Imperforate Pair Error - Stuart Katz

$ 44 $ 26.4

Scott# 1036b - 4c Red Violet - Lincoln - ERROR MISCUT- booklet pane of 6 - MNH

$ 21.56 $ 12.93

1632, Mint NH 13¢ Color Shift Error Zip Block of Four Stamps - Stuart Katz

$ 154 $ 92.4

1868, Mint NH 40¢ Misperforation Error Plate Block of Eight Stamps - Stuart Katz

$ 171.6 $ 102.96

#1891a 18c 50 Star Flag EFO Imperforated Coil Pair MNH OG VF CV .50

$ 13.2 $ 7.91

#2913 32c Flag over Porch EFO Misperforated Pair MNH OG "Includes New Mount"

$ 7.04 $ 4.22

C125b, Mint VF NH Light Blue Color Omitted Error Plate Block - Stuart Katz

$ 435.6 $ 261.36

1041B, Mint NH 8¢ Scarce Misperfed Error Statue of Liberty - Stuart Katz

$ 26.35 $ 15.81