Ruptured Ducks
Players for Ruptured Ducks did not have a team uniform as picture portrays, but that changed in 1947 when they were sponsored by Gray's Tavern. Players on team were all World War II Veterans.
Derivation of team name probably comes from a service pin worn by World War II veterans, a lapel device nicknamed the "ruptured duck," which allowed wearers to show without conversation that they had served. See image below.
Click here to view Gray's Tavern team section.