I came across this 1937 Brazilian Contract revolver today. I suspect it has been refinished as the Brazilian seal is pretty washed out. Serial # 187141.
Flat top bridge. 1937 under the Brazilian star. Navy Arms import stamp located under the stocks.
I know the stocks are M1917 replacements as the serial does not match.
The serial on the frame, barrel, cylinder all match. Assembly numbers on the frame/yoke match.
One odd thing I noticed when looking at some other '37s during a search was some showed the cylinders/ejector rods going to plum like my example. Like mine they looked to be in better than average condition for '37s. I'm wondering if some business refinished and then sold them?
BTW....It has the number of 5305 on the backstrap which I suspect is a inventory number of some sort.