not quite the same but...
My uncle was a sound engineer, had been working in philadelpia as long as i had known him, One Christmas, he was talking about his stint in the army during the war, and he allowed to me how he had been part of a movie and sound detachment that was in Germany to document the War and some of what the Germans has done. He mentioned a couple of famous people he had worked with during this assignment and talked about how they had filmed some of the concentration camps and also had seen and filmed some of the USO tours. He knew I was a history nut and said he some things to show me. We went out to the Carriage house and he Told me to take some film cans off the shelf. What looked like seperate film cans had been turned into tall stacks of cans made without dividers, effectively masking what was in them. All had tape marking them as "unexpsed film... do not open!!" after I had set the cans on the floor my uncle pulled the tops off of them and inside were SS daggers and badges and pistols and hats and all sorts of other goodies. he reached in and pulled out a P-08 Luger that was absolutely NIB condition handed it to me and said "do not tell anyone about these your Aunt hates Guns" All told the one can had four lugers and a mauser HsC two of the Lugers were engraved the others were pristine. The next can held more bits and pieces. He looked at me and said late in the war, they had filmed the camps and were waiting for the soldiers to push on when one of the locals took them to a very fine house and told them that SS had been there and they might find some documents there that would be of interest. The House had been the locals SS headquarters and when the SS left in front of the advancing US trooops they had left a lot of the collected booty of their years of running the camp. art, jewelry, gold, and the finest uniforms and dress gear all waiting for them. The film crew decided the only way to get the booty home was to ship it as film, hence the stacked cans, and as "evidence". Many of the file cabinets of documents were shipped to Nuremburg. But lots of others were shipped to the Philadephia Navy yard. marked as evidence it was not touched by the inspectors nor was it opened until My uncle and a few of his friends got home from europe in late october 45.
I still have that Luger that my uncle gave me, the rest were found by my worthless cousins and either sold or simply brought to the cops as in"we do not want these guns anymore".
Several years ago I was working at a gun shop when a man about 35 years old walked in carrying a funky leather and fabric case. He set it on the counter and asked if we were in the market for guns. I stated we always were looking and I would get the Boss, as I left i could hear him flipping the catches of the odd case he had brought in. The Boss was a litttle annoyed to be interupted from a snack when i called to him but he was looking over my shoulder and stopped in mid word. I turned to see what he was looking at and nearly fell over. On the counter were two TWO brand spanking new Thompson 1928's, with all sorts of gear to go with them, L drums C drums, extra wood, like nothing we had ever seen. My boss gathered his wits and asked if he could handle them, the man said yes, and my boss picked up a brand new 1928 thompson that still had the hangtags on it!!.
my boss asked where this man had gotten them and he said my dad was mr XXXX (a very prominent local name) and he bought them years ago, they have been sitting in attic ever since. My boss now asked to see the papers and was givin the original bill of sale from a store in chicago. No NFA paper work at all. Realizing that he now had two unregistered non amnestied full auto guns in his gun shop My boss got very very nervous. he tried to explain to the guy that he was in big trouble if the feds found out about it and we were introuble for just having them there without reporting them. This made the owner very very unsettled as well. We exlpained the best thing to do was for him to make some calls to some of the family friends and see what might be able to be done by those people who live in Washington. My boss called his friend who was the local CoP and asked him to stop by. The guns were to be siezed by the police and locked into their safe evidence locker and held pending the disposition of the guns. long story short, after talking to his family lawyers and politician friends, and several months wait a private bill was passed in congress to get amnesty bridge paper work started that would save these guns from the scrapper.