Yep. That is the nickel plated SAT (not stainless). These were issued from 1940 until 1948, so yours came at the tail end of production, before they went to the blued version (I think it first started shipping in 1947, so there was some overlap).

And I agree with Memphis. This revolver appears to be better than 80%. A quite nice example.

__________________
Jack
SWCA #2475, SWHF #318