Mark,
As Doubs said above, Condolences on the loss of your parents.
This is an interesting link to a video taken in a Russian warehouse full of cases of captured weapons from WW2.
https://tvzvezda.ru/news/forces/cont...af.htm/player/
and there are a few pictures of opened cases in this link:
https://laststandonzombieisland.com/...n-guns-russia/
Enjoy
Richard