I have a few old Mexican silver coins that look like they were once glued to a piece of wood. I used nail polish remover with a bit of elbow grease, maybe isopropyl alcohol is more effective.
Thanks for the alternative for my next gunked coins @bulliontools
!PIMP
It seems to be fairly effective after letting it sit for 24 hours or so, and then trying to remove the glue while under running water. I hope that helps! 🙂