The only guns I have ever sold was a Trapdoor Springfield that was no more than a relic and a Sears "Ted Williams" .22 rifle.
I miss the Trapdoor because although it was rusty and pitted, it still had a significant originality to it. I had read stories that the troopers had trouble prying the copper cartridges out of the chamber. Sure enough, this one had gouges on the receiver. I kept it's partner because it was in much better shape. That one is a 50-70.
My Father brought back a Luger, a P-38 and another gun identified as an Autro-Hungarian, .32.
He bought a farm with money Mother had saved from his allotment and also sold all the guns to raise money. A cousin still has the Luger but I have no idea what happened to the others.
He told me a Colonel at the disembarkation point noticed the Luger in his papers and offered him $200 for it. Daddy refused but then later sold it to our cousin, (a Florida Golden Gloves boxing champion).
I have thought about asking to sell it to me several times but still haven't done it.