UNITED NATIONS NEW YORK OFFICES 1957 3c World Meteorological Organization IMPERF PLATE PROOFS PAIR, Scott 49Pl, superb never hinged mint, with inked fingerprints on the reverse as security device. Very fresh & scarce, only 40 pairs produced. (2 proofs)

Send Enquiry for UNITED NATIONS NEW YORK OFFICES 1957 3c World Meteorological Organization IMPERF PLATE PROOFS PAIR, Scott 49Pl, superb never hinged mint, with inked fingerprints on the reverse as security device. Very fresh & scarce, only 40 pairs produced. (2 proofs)