Watch List notes:

Peru, 4R-sized silver medal, 1754 date below large A, San Marcos Academy, PCGS AU55. Betts-398; Fonrobert-unl (like 8907 but with A instead of R). Obverse with shield surmounted by cherub's head bearing a six-point star, crown and SM in cartouche, inside legend ACADEM.S.M.URB.REG.IN.PERU.; reverse with letter A above date 1754. Lightly toned (darker in legend) with traces of luster, minimal marks and wear. The Academy of San Marcos, now the National University of San Marcos, is the oldest officially established and recognized university in the New World, having been founded by royal decree on May 12, 1551. This medal comes in two varieties, one with an A on the reverse (like this one) and one with an R.
($500-750)