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SCOTT # 806 2c JOHN ADAMS, PERFS SHIFTED BOTH LEFT & UP

$ 24.2 $ 14.52

554, Mint 2¢ Printers Waste Imperforate Block of 48 Stamps - Stuart Katz

$ 1315.6 $ 789.35

US Scott #1811a imperf pair Mint NH OG Very Fine SCV 0 PSE Certificate

$ 105.6 $ 63.35

Cam 9, Air Mail Postal Card with C4 & doubled surcharge of indicium

$ 154 $ 92.4

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

$ 875.6 $ 525.36

#2247a Silver Color Missing Error Mint-Fine-OG-NH SCV 0 (2/9 GP)

$ 440 $ 264

1632 MNH 13c PB, PRINTING FLAW . .

$ 2.63 $ 1.57

1597b, Grey Color Omitted Error in Transitional Strip CV 0.00 - Stuart Katz

$ 171.6 $ 102.96

1355a, Mint NH 6¢ Disney Ocher Color Omitted Popular ERROR - Stuart Katz

$ 286 $ 171.6

807, MNH 3¢ Misperfed Pair Showing Gutter at Left Error - Stuart Katz

$ 22 $ 13.2

1906A MNH 17c coil pairs COLOR and PRECANCEL DIFFERENSES . Electric auto 1917.

$ 1.75 $ 1.05

US EFO Scott #2197 25c Jack London single, major Mis-perf!

$ 6.6 $ 3.95

US EFO Scott #1897A 2c Locomotive Coil Pair USED, major Mis-perf!

$ 6.6 $ 3.95

PITCAIRN ISLANDS 1950 1-1/2d KGVI TO ENGLAND.  SCARCE!

$ 8.75 $ 5.25

EFO 1252 BLUE LETTERING ALMOST OMITTED - COMPARE TO NORMAL

$ 35.2 $ 21.12

EFO REVENUE R5a PRE-PRINTING PAPERFOLD VERTICAL TOP-TO-RIGHT CORNER MARGIN

$ 30.8 $ 18.48

811, Mint 6¢ Prexi Tape Slice Error With Rejection Marks - Stuart Katz

$ 220 $ 132

3632A - Scarce Misperf / Diecut Shift Error / EFO PNC5 #S3333 "Flag" Mint NH

$ 52.79 $ 31.67

2521 - Misperf Error / EFO Make-up Rate Mint NH (stk5)

$ 4.39 $ 2.63

1036, MNH 4¢ Unique Fold Over Error on Lincoln Sheet of 100 - Stuart Katz

$ 110 $ 66

1237, Mint NH 5¢ Large Perf Shift Margin Copy Error - The Sciences - Stuart Katz

$ 30.75 $ 18.45

1139, Mint NH 4¢ RARE Misperfed Error Block of Four Stamps - Stuart Katz

$ 83.6 $ 50.16

1394, Mint NH 8¢ Misperfed Error Zip Block of Six Stamps - Stuart Katz

$ 74.8 $ 44.88

1965 Florida Settlement Spanish Explorer 5c Stamp #1271 MNH/OG MISPRINTING ERROR

$ 5.98 $ 3.59

U.S. SC. #1555- 10c D.W. GRIFFITH WITH NEAT COLOR SHIFT-BLOCK OF 9-MNH-LOOK!

$ 17.55 $ 10.53

US #2198-2201 Stamp Collecting 22c Booklet Pane of 4 1986 EFO color shift

$ 7.91 $ 4.74

2866b, MNH Wonders of the Sea Imperforate Block of Four Error - Stuart Katz

$ 352 $ 211.2

#2437b "20TH UPU CONGRESS" PLATE BLK/4; DARK BLUE OMITTED MAJOR ERROR BN5675

$ 330 $ 198

J90, Mint 2¢ With Wide Spacing Strip of Three CV $ 120.00 - Stuart Katz

$ 43.95 $ 26.37

2111, Red Tape Splice on "D" Stamp Sheet of 100 Scarce! - Stuart Katz

$ 660 $ 396

2166a, Imperforate Error Plate# Strip of 20 Stamps MNH CV 0+ Stuart Katz

$ 352 $ 211.2

Scott# 1036b - ERROR MISCUT- PARTIAL PLATE # - booklet pane of 6 - MNH

$ 21.56 $ 12.93

Scott# 634d - ERROR MISCUT- PARTIAL PLATE # - booklet pane of 6 - MNH

$ 21.56 $ 12.93

1142 - 4c Gutter Snipe Error / EFO Block of 4 "Credo" "Francis Scott Key" MNH

$ 8.79 $ 5.27

US EFO Scott #1898 Transportation 3c Handcar coil single, major Mis-perf!

$ 3.96 $ 2.37

US Sc 2394, 2540, 2541 used. 1988-1991 Priority & Express Mail Eagles, VF

$ 14.05 $ 8.43

USA : 1969. Scott #1373 Incredible ERROR Shift of Red & Black. Very Fine Mint NH

$ 100.31 $ 60.18

United States Postage Stamp #3125 MNH Block of 4 IMPREF Between Unlisted ERROR

$ 435.6 $ 261.36

2165a, Complete Imperforate Error Sheet of 50 Stamps MNH CV 50+ Stuart Katz

$ 875.6 $ 525.36

1943 JENKINS CAMDEN CARD PROOFS

$ 8.8 $ 5.28

#2463a "COG RAILWAY" IMPERF, STRIP WITH PLATE #1 BQ1250

$ 396 $ 237.6

US,807,MAJOR INK SMEAR,PLATE BLOCK ,MNH,VF,PREXIE,1938 PRESIDENTIAL SERIES

$ 43.51 $ 26.1

1284b, Two Miscut Booklet Pane ERRORS - Mint NH - 6c FDR - Stuart Katz

$ 110 $ 66

#900 Anti-Aircraft Gun - Imperf pair except for one perforation

$ 7.91 $ 4.74

#2515 1990 Christmas Tree EFO Major Error Misperforated MNH OG VF

$ 13.2 $ 7.91

U.S. SC. #1593 11c MISPERF ZIP BLOCK OF 6-BOTTOM 2 W/NO DENOMINATION-MNH-LOOK!

$ 87.95 $ 52.77

2476a - Scarce Quadruple Impression Error "American Kestrel" Mint NH Cat 0

$ 378.39 $ 227.03

CE1 Air Mail Special Delivery Plate Strip of 10 EFO Wandering Perforation Hole.

$ 13.2 $ 7.91

1472 Color Shift Error / EFO "Santa Claus" 2 Diff. & Normal Mint NH

$ 6.32 $ 3.79

ERROR Stamp Pair EFO 1940 Torch of Freedom For Enlightenment 3c #901 MNH MISPERF

$ 5.72 $ 3.43

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

$ 396 $ 237.6

CE1 Air Mail Special Delivery Full Sheet of Rare EFO "Experimental" Gum Breakers

$ 88 $ 52.8

MOMEN: US STAMPS #C23 VAR. STRIP FOLD OVER MINT OG NH LOT #72546

$ 396 $ 237.6

1950 Misperforation ERROR 20¢ F.D.R. stamp - Mint NH - Stuart Katz

$ 13.2 $ 7.91

#U619a VAR. ULTRAMARINE OMITTED & ROSE 99% MOSTLY OMITTED CV 0.00 BN7431

$ 351.12 $ 210.67

US SCOTT #R115a Revenue, Used, INVERTED CENTER! APS Cert, SCV 50, garyposner!

$ 660 $ 396

2026a, IMPERFORATE PAIR ERROR - RARE 20¢ CHRISTMAS

$ 66 $ 39.6

1035 - 2-Way Misperf Error / EFO "Statue of Liberty" Mint NH

$ 6.15 $ 3.69

672 - Scarce 3c Nebr Wide Spacing Overprint Shift Error Strip 5 Mint NH

$ 87.99 $ 52.79

#1617 10c Right to Petition EFO Misperforated Pair Dull Gum MNH OG VF

$ 7.04 $ 4.22

1981 US #1891 - 18c Coil Strip of 3 with Blind Perfs in Between, Mint NH

$ 8.8 $ 5.28

1971 US #1280c - 2c Wright Miscut Booklet Panes, Plate #s 32966 / 32967, Mint NH

$ 7.48 $ 4.48

2877b Double Impression of Red Error / EFO "G" Makeup Rate Cat 5 Mint NH

$ 114.39 $ 68.63

1390a, Mint NH 6¢ Large Color Shift Error Plate Block - Stuart Katz

$ 44 $ 26.4

2263a 20 cent Cable Car Imperf Coil Error Pair

$ 8.75 $ 5.25

2201b, Black Color Omitted Booklet of 2 ERROR Panes NORMAL INCLUDED Stuart Katz

$ 52.75 $ 31.65

1287, Mint NH 13¢ JFK Misperfed Two Different Errors - Stuart Katz

$ 44 $ 26.4

1131, Mint NH 4¢ With Reverse Printing Under Gum Error W/Normal - Stuart Katz

$ 52.8 $ 31.67

999, Mint NH 3¢ Misperforation Error Block of Four - Nevada - Stuart Katz

$ 52.8 $ 31.67

1002, 3¢ RARE Misperf Error Mint NH Chemical Society - Stuart Katz

$ 30.8 $ 18.48

ERROR BROKEN/MISSING INK PRECANCEL WINDOW ROCK ARIZONA ON 1C US STAMP

$ 129.48 $ 77.68

US #4640b Four Freedoms Flags imperf strip, VF NH MNH

$ 254.76 $ 152.85

1618C 1978 Americana EFO MISPERF ERROR coil Strip of 4 VF NH

$ 12.32 $ 7.39

1577 10 Cent Banking Nice Color Shift

$ 8.75 $ 5.25

Scott #1895 20 Cent Supreme Court Misperforation Freak (Pair) (MNH VF OG)

$ 1.31 $ 0.78

MAD Leonard Sherman Parody UN Dag Hammarskjold Color Inverted Error Stamp MINT!

$ 7.03 $ 4.21

1837a, MNH 15¢ Scarce Misperfed Error Block of Four -- Stuart Katz

$ 66 $ 39.6

526, Dramatic Reverse Printing Under Gum Error Block of 40 CV 00+ Stuart Katz

$ 1100 $ 660

3829 - Multiple Error / EFO Misperf/Diecut Shift Embedded Bell""Snowy Egret" MNH

$ 6.15 $ 3.69

#1065 VAR. "3¢ COLLEGE" ISSUE MAJOR PERF SHIFT ERROR PLATE BLOCK BU4095

$ 44 $ 26.4

C34 Plate block Non Listed ERROR

$ 4.4 $ 2.64

US SCOTT #1528a BLUE "HORSE RACING" Omitted, SCV 0.00, Great from garyposner!

$ 308 $ 184.8

US Offset Error 1965 Francis Parkman Scott 1281 MNH CZ5

$ 7.87 $ 4.72

1010, Mint Crazy Misperf - Paper Fold Error Sheet YIKES! - Stuart Katz

$ 352 $ 211.2

#1906 17c Electric Auto EFO Misperforated Strip of 5 MNH OG VF

$ 17.6 $ 10.56

US Scott #4141a pair No Die Cut Mint Extra Fine

$ 352 $ 211.2

1863, 22¢ Scarce Misperfed Bottom Margin Copy Mint NH - Stuart Katz

$ 17.55 $ 10.53

EFO 1529 DRAMATIC BLACK COLOR SHIFT TO RIGHT "SKYLAB"

$ 26.4 $ 15.83

#834 VAR " COOLIDGE" MINT VLH PRE-PRINT PAPERFOLD ERROR IMPRINT COPY BS8833

$ 131.56 $ 78.93

SC#901a 3c Torch of Enlightenment Imperforate Pair MNH

$ 3.51 $ 2.1

US BUGS BUNNY SINGLE STAMP DIE CUTTING OMITTED ERROR EXCELLENT SAMPLE lot 84

$ 66 $ 39.6

1585 5 Cent Reading Overinked

$ 7.87 $ 4.72

1283 5 Cent George Washington Strip With Smear on Center Stamp.

$ 9.63 $ 5.78

925 3 cent Corregidor Heavily Overinked and Smeared

$ 8.75 $ 5.25

1857, MNH 17¢ Horizontal Perforation Shift Error Pair - Stuart Katz

$ 17.55 $ 10.53

J89a, Mint VF NH Denomination Omitted Error Postage Due - Stuart Katz

$ 105.6 $ 63.35

EFO 1434-5 FDC WITH COLORS SHIFTED IN PLATE BLOCK -- SUN SHIFTED TO LEFT

$ 132 $ 79.2

916a, RARE Complete Sheet of 50 "Normal" Stamps With PSE Cert - Stuart Katz

$ 308 $ 184.8

#2515 1990 Christmas Tree EFO Major Error Misperforated Block of 4 MNH OG VF

$ 26.4 $ 15.83

#1455a Yellow Omitted (GP2)

$ 231 $ 138.6