Auction # 2228 ARGENTINA: Special August auction

GREAT RARIETY: GJ.838, 1939 1.50P. Fonopost record, proof in steel blue printed on glazed paper, large block of 50 (right part of the ONLY printed sheet of 100), on back it has 4 impressions of GJ.827 (50c. UPU Congres), largest multiple, unique, with crease between 4th and 5th rows that does not affect the stamps, excellent quality, extremely rare and spectacular!