It's a heavily-used S&W Victory model from ca. late 1943-early 1944. I can't make out the caliber stamping on the barrel, but the 4" barrel would indicate a .38 Special. Grips are from the 1920s, and are worth a few bucks by themselves, as they appear to be in good condition. The lanyard loop is missing, but can be replaced if the plug can be removed. If it has no mechanical problems, and is shootable, it would bring at least $200. You probably did OK on the trade. It's a good candidate for a home re-finishing project, as it has virtually no original finish. The fact that it has no topstrap property stamp indicates it may be one made for stateside use during the war by police or defense plant guards. By the way, you can add multiple images to a single posting.