GUYANA 1990 BUTTERFLIES IMPERF PROOF SHEETLET WITH UNADOPTED VALUE
Butterflies imperforate proof sheetlet of 16 stamps with $8.90 value (rather than $10 of issued sheetlets). Very scarce. Ink offset on gummed side affecting one stamp otherwise fine. Mint never hinged. SG2843var-2858var; SC2343var
