1945-46 Caramelo Deportivo card #97 of Santos Amaro. Graded a 2 (MK) by PSA. Absolutely no idea where the MK is. I'm guessing it's just another error by PSA. Amaro was one of the top players in both the Cuban an Mexican Leagues in the 1940s. His son, Ruben, and his grandson, Ruben Jr., both played in the big leagues.