Lots 628 - 630, Catalogue of Auction #69 Raritan Stamps, Inc

Lot   Cat.#
Description
 
Est.$
628  268/81
1934, "Portugal", 1/2a-20a, set of ten imperforated plate proofs in horizontal pairs, printed on paper with watermark "Maltese Cross", no gum as produced, NH, VF and scarce unit
750.00
629 **   C1-6

Air Post stamps

1936, "Portugal", black overprints or surcharge "Aviao", complete set in sheet margin blocks of four, dried original gum as always exists, NH, VF, C.v. $230 as hinged singles
75.00
630 **   C13 fn
1940, New York World's Fair, green overprint on 50a red brown, two singles, one of which has inverted overprint, full OG, NH, VF, 2,000 stamps were issued with a common overprint, and only 25 were produced with inverted one, made this stamp an undoubted worldwide airmail rarity, expertized by S. Wolf
5000.00