During my lunch break today I decided to hunt the site of a Negro League ball park. Less than 10 minutes into my hunt I got a solid hit that jumped back and forth between high penny and quarter but would consistently hit as a solid dime. Dug a plug and out popped this 1939 Mercury dime. Less than 20 feet away located the badly corroded butt of an old revolver. Went back for two hours after work and found nothing but a clad quarter. Very happy about the Merc though.