Is this 1966 dime with a JS mark on it have some silver or rare?

Hi. I just got a 1966 dime in my change earlier today. There is a little copper on the side just a little but when I flick it it rings. And there is a JS mark on the right bottom of the neck of Roosevelt. Can anyone tell me if it has at least some silver in it or if it is a rare dime? Thanks!

 

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No silver, designer's initials.

 

JS=John Sinnock, the designer of the Roosevelt dime (as mentioned above by Ken). No silver...cupro-nickel composition.

 

i have a 1966 dime one side is silver and the other side is copper. can anyone tell me about this coin

 

Would need good pictures and the weight of the coin in grams to at least one, preferably two, decimal places.

 

Odds are it is discolored on one side. But if it is significantly light then it is a valuable error.

 

I have a 1966 coin... Js is two dots... Can't make it out at all.. Alto of errors on thus coin