he has researched it 11,000 mintage .would like opinion and grade if photo is good enough. It has writing around edge.
1 mint state 1 on Ebay... Link: https://www.ebay.com/itm/Germany-19...733261?hash=item262f625f0d:g:0kUAAOSwRs9eApbn
details coin on Ebay...link: https://www.ebay.com/itm/1932A-German-5-Mark-NGC-AU50-Details-Johann-Goethe-/274655040783?hash=item3ff2b7550f:g:UkAAAOSwS0JgCbWv&nma=true&si=WBbEIA6wQrzgKXB5Ry6zcT0Abxg%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557 I think your friend's coin would bring much more money because it does not appear to be cleaned. Do not clean it. Leave it as is.
That's an extremely rare coin your friend has there, @Railguy. If I were in your position, I'd take it to my LCS and ask about sending it in to be graded.
I would also recommend getting it graded. If you look on the Heritage archives AUdetails is ~$1500 and a 63 is ~$3000.