$6.95

Perfectly Flawed US EFO 1975 SN 1555 MNH OG-Fantastic Color Shift Error (Single)

$12

#1618c 15c 15 Star Flag EFO Misperforated Coil Pair MNH OG VF

$17.9

APC/CVP/ATM - Overprint ERRORS on New & Old Flag stamps from new machine! (1)

$24.95

1823, Mint NH 15¢ Large Perf Shift Error - Emily Bissell - Stuart Katz

$9.95

Perfectly Flawed 1978 8.4c SN 1615Cd NG Error - Imperf Pair - Corner Crease

$20

#2261 16.7c Popcorn Wagon EFO Misperf Strip of 5 MNH OG VF "Includes New Mount"

$115

1690a, VF Mint NH 13¢ With Blue Color Omitted ERROR * Stuart Katz

$295

C39, MNH 6¢ Over & Under Inked Error Airmail Sheet of 100 - Stuart Katz

$24.95

2045, Mint VF NH 20¢ - Huge Color Shift Error With Normal * Stuart Katz

$24.5

US #C56 10¢ Pan Am Games Airmail vertically misperfed error, Plate Block (goo1

$125

954, MNH 3¢ Misperf Shift Freak Error Block of 4 California Stamps - Stuart Katz

$50

1266, MNH 5¢ Black Color Almost Completely Omitted Error - Stuart Katz