With no pic of it I can't speak for your 10 cent, but for the penny, it doesn't seem to be random mechanical damage - they seem to be hard-carved notches.
Why? one can only speculate. A bored soldier or sailor is one possible explanation; or maybe a counterfeiter perhaps hoping for a "milled edge" effect so he can silver-plate it and pass it off as a florin; perhaps a jeweller has rougheded up the edges so it grips better in a mount or bezel of some kind (though this I doubt, since it seems to have been a botched job, mangling the obverse legend).
Whatever the explanation, it seems to have been done some time ago, and to have seen circulation of some sort after it was done - the notches are toned the same colour as the coin (they're not fresh cuts) and there's dirt and stuff suck down in the deeper cuts.
Why? one can only speculate. A bored soldier or sailor is one possible explanation; or maybe a counterfeiter perhaps hoping for a "milled edge" effect so he can silver-plate it and pass it off as a florin; perhaps a jeweller has rougheded up the edges so it grips better in a mount or bezel of some kind (though this I doubt, since it seems to have been a botched job, mangling the obverse legend).
Whatever the explanation, it seems to have been done some time ago, and to have seen circulation of some sort after it was done - the notches are toned the same colour as the coin (they're not fresh cuts) and there's dirt and stuff suck down in the deeper cuts.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis

























