UNITED NATIONS NEW YORK 1992 29c Defin IMPERF PLATE PROOF PAIR, Scott 614Pl, NHM, 2

UNITED NATIONS NEW YORK OFFICES 1988 25c Cycling – Health in Sport IMPERF PLATE PROOFS, Scott 526Pl, superb never hinged mint lower left corner BLOCK of 4 with UN emblems in the margin, with inked fingerprints on the reverse as a security devise, very fresh & scarce, only 50 pairs produced. (4 proofs)