Antique Bronze Rim Lock Door Knob w/ Stay -
The lock has the initials FT stamped.
I found a very similar lock set and knob set in an early P.E Guerin catalog.
The lock with the stay measure 8-1/4" x 3"
Two very light dents on the top left edge.
This piece is exactly as shown in the photos and has not been restored just cleaned up a bit.