Mexico, 1884-85, 1c-10p Medallions, "COLLECCION" overprint, 14 stamps all different; includes 1884, 2c-2p, 10p (4 known of 2p and 3 known of 10p) and additional 20c imperforate with enormous margins, also includes the 1885, 1c value; few minor flaws, still a Very Fine set, no one seems to know why the post office overprinted these stamps but are very rare, one of the largest sets known. Scott No. 150S//162S, 164S-165S  Estimate $750 - 1,000. $0 (Image)