1943 Cristal premium of Rogelio Martínez. This example is glued to a backing. The 1943 Cristal issues are large-format Cuban beer promotional premiums, not standard baseball cards. They were issued by the Cristal brewery as advertising pieces during the early 1940s and typically feature color images of Cuban Amateur players. The premium measures approximately 7" x 10.5" for premium and the total item measurement is 8 3/4" x 11" accounting for the backing.