See this page regarding 1960 D mint marks. http://www.varietyvista.com/02b%20LC%20RPMs%20Vol%202/RPMs%201960D%20(1-60).htm
I thought that in the UK all the loot had to be turned over to the authorities.
Search the CT threads. There are many on microscopes and camera. Welcome to CT.
I had a clerk working for me back then. She made typical wages for a clerk. She bought every Beanie Baby. Some she paid $300 for. Absolutely...
Even regular issues of coins will not maintain their original value. Look in the Red Book section that lists mint set and proof set issue price...
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