Brooksie and his new teammate in Miami, 1966. We can date this, because the uniform (with its block-lettering and woodcut bird on the cap) was only in use through the 1965 season, as the Orioles went back to script on the jerseys and debuted "Happy Bird" on the cap for the 1966 season.
From somebody's Etsy shop; I don't know the original source for the picture.