This is Robinson's last player card before retiring at the end of the 1956 season. He was actually traded by the Dodgers to the hated New York Giants before calling it quits.
Many believe Robinson refused to play for the Giants. But the truth is he was ready to retire no matter which team retained his rights.
At 37, Robinson's skills were deteriorating and his focus was beyond baseball. He knew he had to support his family and agreed to become vice president of Chock full o'Nuts (coffee) in 1957.
Now back to the actual card.
I wonder if it was the trade that made someone color in Robinson's cap, covering up the 'B' for Brooklyn. Someone also erased the word Brooklyn and crossed out third base, writing in 2B. By 1956, Robinson was actually playing third base after giving up second base to Junior Gilliam.
It's hard to imagine anyone today wanting to deface this vintage Jackie Robinson baseball card. But rivalries were serious in the mid-50s and so was the hatred for Jackie Robinson.