Not meaning any offense to anyone, but this is the kind of gun history that happens all the time. Just because a gun was owned by a war veteran, some folks assume that it is somehow connected with his military service. In some cases, this is true, but in most cases it is simply a gun owned by someone who was in the service. It might have been part of a collection, or a hunting gun, or a defense gun, there is no way to tell.
I have known many WWII veterans who owned .45 M1911/A1 pistols; a few were "bringbacks" (stolen), but most had been bought after the war when they were selling for $29.95, mail order. I have known vets who owned everything from Paterson Colts to Glocks, none of which had any connection with the man's military service. One WWII vet I knew (sadly gone now) collected Civil War carbines. People were continually asking if that Merrill or Burnside was "what you carried in the war."
Families also often misunderstand or are misled. I once met the widow of a man who had been on Omaha Beach on D-Day; she showed me the carbine she said he had carried in that historic landing. Out of respect for the lady I did not comment, but I rather doubt her husband carried an 1873 trapdoor carbine into France.
So, a gun owned by a veteran is just that, a gun owned by a veteran. Unless it has some special - and documented - history, it is worth no more than the same gun owned by someone who never wore a uniform.
Jim