Probally nothing, but I found it interesting that this dime is a bit thinner than most and has a very smooth edge.
Looks like you have a coin straight from the casino. There are thousands of coins in circulation in this area like that due to the casino that is only about 20 minutes away from here.
Interesting posting. Does the blank rim go all the way around? Is there any trace of a reeded edge? Is it fully struck on both sides? I'm wondering if it was struck on a smaller sized clad planchet meant for another denomination, maybe something for use outside the U.S.? Can you photo the front and back of the coin?
Interesting plain-edged variety of a Dime.I have never seen an American coin that was never struck in a milling collar,even though it should have.Occasionally,someone finds a New Zealand $2 coin with a completely milled edge without the security groove in their change over here.
A coin that is struck outside the collar is known as a broad strike error. And in every case - it won't have any reeding. But usually a broad struck coin is a larger diameter than normal and not quite as thick because the collar is not there to stop it from expanding under the pressure of the dies. This coin though - based on the pic - appears to be very close to the same diameter and as thick as the other coins. For this reason I think it likely the reeding has either worn off from repeated use as many casino coins are (which was already mentioned) - or been removed.
figuring it was a casino coin I must have spent it as It is nowhere to be found. It had all the features of a reg dime although it was thinner and no it did not have any trace of reeding on edge. Check your pockets hehehe
