And that is why, I asked the question. The last thing I want to do is offend someone.
These coins are made of zinc. The precious metals were used to supply the war effort. As value goes these are expendable to me. I do have coppers ones that look great and will stay within my own collection. The denominations run from 1, 5, 10 and 50 pfenning pieces, mostly 10.
I've thought of selling them in a yard sale but I'm sure that some would end up in what I believe would be "the wrong hands". These were found and collected as historical items without any political thought just as were the Roman and dark age items.
I think I will do as some of you suggested. I'll place them in a pouch within a baggie with a note stating what is inside. Take or leave, the choice will be theirs. If I find it becomes a negative on the enjoyment of geocaching (treasure hunting), I guess I'll just put them away.
We do plan on building a cache using some of the items I've found while metal detecting in Europe. Items from as far back as 400 BC. Once we gain some more experience, this cache will be placed in NW Florida.
Thanks for all your input.