Washington DC: John W. Kaufmann, Inc, 1981. Original wraps. Near fine. Item #8908
Catalog description #17: 5c Red Brown (1), Blk of 4, OG, faint tone spots from gum & light horizontal crease along T frameline of B stamps, 3 large margins to just shaved at R, UL stamp is a Gem, a Rare Block ('68 P.F. Cert)........ (estimate) 30,000.00.