Cent Clad

Question about a gold or silver clad 1967 half dollar?

I have a 1967 uncirculation Half dollar, 50-cent piece. I think its gold or silver clad because it has a gold appearance. My problem is i cant find any information on this particular coin on the internet. Is this a rare coin? how much is it worth? or how can i find out?? Any information would be helpful.
Im pretty sure this coin was bought from a infomercial a while back. I also have proof of authenticity.
Please take a look at my photos of the coin.

The 1967 Kennedy is silver clad and is 40% silver. The last time I checked silver was around $17.50 an ounce, it may have changed but at that price the 1/2 has $2.59 worth of silver The coin has .14792 oz of actual silver weight. It may have turned a gold color for the coin has toned. That can be caused by the way it was stored and the environment got to it. The fact is coins tone over time unless really protected. I have heard of no one gold plating sets from this date nor have seen any for sale. The 1976 coins were gold plated so some could make a few bucks off the bicentennial craze. Your coin should weigh 11.50 grams and if it weighs a little more it could have been gold plated by maybe a science class. A light gold color is tone though. Hope this helps.

Metal Detecting Michigan Silver Finds July 17th 2010