These guys were no doubt, tough... but they were a product of the great depression... and having to work hard. When you realize that that first "Great Depression" was created by the Federal Reserve Bank's pulling in lots of US currency, it created a severe lack of dollars in circulation. The Roaring 20's were like the tech 90's in a since.
Today, the Fed prints about 80 billion currency notes monthly, and the US is still broke? LOL.
Very cool artifacts, indeed. He'd have to taken them directly from dead Nazi soldiers...