Reverse is in the boiler. My guess is that the lettering was removed. Based on the thick shank unweighted link coupler, I’d put this one as a 1947 312 SIT. This one runs and reverses smoothly. The smoke unit in the tender works great as well.
Item Tag: 312 SIT
Reverse is in the boiler. This one has a brass-weighted link coupler. The loop handle at the top of the rear of the tender is missing. TCA #97-45581. Internal reference SRT26496.