The Army models had a number on the butt that was different from the crane Colt serial number.I guess I misunderstood -- thought your reference to the frame number would be the one on the bottom of the grip butt.
But now I notice there is no hole in the grip butt for the lanyard ring. Did the later models eliminate that feature?
Colt used up leftover parts building these. They made about 900 of them and they are referred to as the 1917 Commercial. Your gun was part of a block of 600 that serial numbered from 335,451-336,234. These were made in 1932.