It's hard to get any information on amateurs ballplayers from Cuba. All I really know about Julio Bringuier is that he was a catcher with Club Casino Espanol.
I've posted several Cuban cards but this one is quickly becoming my favorite. I tried to read up a little on amateur baseball in Cuba in the 1940s and what I learned is that most of these guys worked regular factory jobs and played baseball to relieve stress and get their minds off the hardships of life.
It wasn't about fame or money. It really was about the love of the game. Sometimes I think we Americans think we have a monopoly on baseball. But baseball thrives in other parts of the world including the island nation only 90 miles from tip of Florida.