A friend of ours has an annual Groundhog's Day get-together. While there, he showed me his father's service pistol from WWII.
It's in very good condition having spent most of the time in a box. Only a little rust on the ejection port and the usual scrapes and wear. As good as finding a piece of firearm history in this good condition is that there's also personal history that's been preserved with it including personal photos and newspaper clippings.