Julio Valera is a Baseball-Player, currently playing for New York Mets. Julio Valera was born in 1968 in Aguadilla, Puerto Rico. There are currently 86 Cards of Julio Valera in our Database including 1 rookie Cards and 85 variations Cards. The most valuable Card of Julio Valera is currently 1991 Topps Desert Shield #504 Julio Valera PSA 10 by Topps from 1991 with a worth of approx. $59.05.