error on plate block, Blocks/Multiples, Errors, Freaks, Oddities

807 - Inking Errors on Prexie Plate# Block of 8 Mint NH

1977 Sailing Vessels #744-7 M/S Plate blocks MNH+ on LL #747i "3 Pulleys" ERROR

1400, 21¢ GIANNINI Misperforated Plate Block Major Error - PL# capture on stamp!

1731, MISPERFED ERROR PLATE BLOCK PL# CAPTURE ON STAMP

#1555 VAR. "DW GRIFFITH" MAJOR FOLDOVER ERROR ON PLATE BLOCK - UNIQUE HV693

#1362 VAR. "WATERFOWL" PRE-PRINT PAPER FOLD ERROR ON PLATE BLOCK UNIQUE BN3146

#527 VAR. 2¢ "WASHINGTON" PLATE BLOCK OF 6 DOT ON "G" ERROR BN1097

#1716 VAR. MINT PLATE BLOCK OF 4 W/ FOLDOVER or PRINTING ERROR ON REVERSE BP1623

#1858 VAR. FULL GUTTER ERROR W/ FOLDOVER, or DOUBLE PLATE BLOCK ON STR/30 HV1694

USA Sc #2238b (1984) Plate Block of 4, MNH: Error - Black Msg on Stamp or Pl #

1770, PLATE BLOCK REVERSE PRINTING ON GUM ERROR R.F.K.

MALTA 1902 '1d ON 2½d' BLUE, SG36+36a 'PNNEY' ERROR IN PLATE BLOCK

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