I have a 1999 p dime that does not have the tail side stamped. Does anyone know anything about a dime like this?
I realize that this is your first post, but you should have looked around the site first to learn a few basics. No one here, despite their level of knowledge, can tell you anything without a picture of the object you are asking about. Welcome to Coin Talk, aphughs, and enjoy the ride. You will find an infinite amount of knowledge here. You might get teased a bit here, but it's (usually) all in good fun.
Weigh it against a reg dime, look at the thickness next. I'm almost 100% positive someone ground it off, so PMD.