Netherlands. 10 Ecu 1992 (No reserve price)

Dutch ECU silver coin / silver medal from my father's collection liquidation with certificate and a green spot.
It was not circulated, but apparently it has “sweated” under the cellophane wrapper and now, as I have researched, it needs a bit of warm dish soap or soapy water with vinegar or citric acid to remove the “verdigris” again.
Since I have no experience with coins, I don't want to handle it myself and I ask for your understanding!

The ECU catalog is shown for orientation, but it is not part of the offer.

No shipping via DPD