UNITED NATIONS VIENNA OFFICE 1993 10s Globe – Healthy Environment IMPERF PLATE PROOFS STRIP of 3, Scott V148Pl, superb never hinged mint, very fresh & scarce. (3 proofs)

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)