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I am serious but no guarantee. Maybe try on Ebay first yourself of else in the future I can use catawiki here in Europe. Most dukaton buyers will be in Netherlands I guess.
No guarantee ofcourse and 9% auction costs...(a reserve might be possible if they agree the coins is worth a couple of hundreds...

OK I understand. I have been an ebay seller in the past and still sell things there from time to time so I may try them first. Oh those #%@$! fees 🤬
Appreciate the offer and all the info. Have a great weekend gr!