Re: S&W Model 39
The S&W pistol program was not initiated because of the large number of pistols used in WWII, but in response to a request by the U.S. Army for proposals for a new pistol to replace the M1911A1. Carl Hellstrom didn't design the pistols, though he was in overall charge of the company and the design team that did. The Army ultimately decided that it had enough .45 pistols on hand that there was no need to adopt a new pistol at that time. (Of course, the 9mm Beretta M9 was adopted many years later, but that has no bearing on the S&W developments in the 1950's.)
"Most" Model 39's are not made with a steel frame, phosphated or otherwise, they have an alloy frame. The steel frame Model 39 is quite rare as others have indicated.
I have no idea what you mean by "game purposes." No one is discussing games, we are talking about real pistols. Also, I would be interested in your source for the information about a 9mm "Model 41".