Well... it had to happen. One of my favorite coins/year to stack 1963 Franklin half.
It weighs the right weight, every detail of the coin looks perfect... but you can clearly see a copper planchet beneath the thin layer of silver that coated its surface. Wear is on the high points on either side of the coin.
I can't take pictures, but trust me... if it weren't for the copper showing through... YOU would be fooled. Upon first cursory inspection, I thought it was one of those coins that people delight in marking with fingernail polish, and that someone had done a poor job of removing it, leaving a pinkish patina. But no, under a magnifying glass you can see where the plating is peeling off.
I just received it from a new dealer on BS whom I believe to be reputable. I will ask for a return for refund.