Vintage cast iron US MAIL letter box manufactured by Bridgeport Castings Company in 1948- the year is cast into the bottom. The box measures 20" tall with 8 1/4" by 13" base.

Included is the mounting bracket and lock I don’t know if it works or if original

There is a split in the iron on the back side and a bit of the frame that holds the mounting bracket is missing- there is still plenty of frame left and should not affect the bracket much