Only 4 known w/o mounting holes.

When the series was not accepted as a Florida chip and thought to be a club in Detroit (prior to the completion of my study at the South Florida Historical Society Museum Library), it was then thought the series (only the '50' at the time) was from a ship known as the "FLORIDIAN" which did a MIAMI/HABANA crossing... I'd love to see this ship and check it out -- you never know...