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Lots 495 - 501,
Catalogue of Stamp Auction #79, September 14, 2018. Raritan Stamps, Inc

Lot   Cat.#
1991, Endangered Species, 1000r multicolored, complete set of six plate proofs with control angles at corners, printed on thick glazed paper, cut from composite proof sheetlet of six, each one with black overprint "Prueba"(Proof) on reverse, no gum as produced, NH, VF and very rare, reportedly only 45 sets were sold, the only uncut sheet retained in the Mexican Postal Museum
496  Sanabria #14

Air Post stamps

1929, Eagle, imperforated proof of 25c in green and brown, horizontal pair, nice four-side margins, full OG, hinged, VF and scarce, only 50 stamps were produced, C.v. $600 (1966)
497  C141
1944, Symbol of Flight, set of three essays of not approved design for 50c in various color combinations, all are in blocks of four with perfin "Muestra" (Specimen), full OG, NH, VF
Click here to see the backside
498  O193a

Official stamps

1927, inverted black overprint "Oficial" on Post Office 5p green and black, full OG, previously hinged, VF, MEPSI certificate, the stamp is listed, but has no price in Scott Cat.
499 **   137/40, var
1937-38, surcharges on Postage Due stamps, block of four 40(c)/60c red, bottom right stamp with small "0", horizontal pair 65(c)/1fr blue, left stamp with wide "6", horizontal pair 85(c)/1fr blue, right stamps with spaced"8" and "5" varieties, full OG, NH, VF, Dallay #155/58, a, €631++
500  1
1924, Scepter of Indra, 1c multicolored on beige paper, perforation 13 1/2, bottom right corner sheet margin horizontal strip of four with perfin "Obrazets" (Specimen), full OG, NH, VF and very rare, especially without invalidating perforation
501  2
1924, Scepter of Indra, 2c multicolored on olive green paper, perforation 10, left sheet margin block of eight (4x2), perfin "Obrazets" and invalidating perforation, full OG, NH, VF and scarce