I have got to get a better monitor ( or better glasses)
What you have is (I think) a S&W Model 1905, daddy of the Model 10 Military & Police Special- or a 38-200 British Service. 1905 made up to 1940, the 38-200 1940-45. The Victory model is a different gun.
Yes, some of these went to the British Military. They used a 38 S&W cartridge, loaded with a 200 grain bullet. You may see crossed swords, with letters in between the crossed blades. Maybe something like C B 4. Britain required that guns being imported be proof tested- code to year, place (Birmingham) and code for the tester.
What's it worth? Well, it's an old gun, not a popular caliber, I can go $50 if you pay the shipping.....
(No- stop- put the gun down!) Here's what one sold for-
Revolvers For Sale - S&W M1905 38/200 WWII BRITISH LEND/LEASE REVOLVER - Auction: 9163179 (Ended 01/11/2010, 05:40:46 PST)