Welcome to the forums. We will need MUCH more information if your looking for a value on a coin/medal/banknote, pictures are needed, so once you get those setup, you'll be good to go.
Might want to search completed listings on ebay. I think these go for a few dollars, maybe a little more. Also, welcome aboard.
Nice error. Looks to be in UNC condition as well. It would normally carry a premium if it had the date, but even though it doesn't, I think it would still sell for at least $10.
since the date is described as missing, I would venture $5 is about right. More if the date were present.
I bought my dateless 90% off center dime for about 6 bud I believe its worth about the same price. Cody