in EBay

I had something similar happen to me a few months ago. I was bidding on a 1946-D Roosevelt dime in an NGC holder. I won the bid, and wrote down the cert. number, to look up later. I just happened to check the listings again, and the same coin was for sale, worded the same way, same guy. I shot a quick e-mail, asking how my coin could still be for sale. I was assured he had gotten the pics mixed up, he had a few different ones for sale. I got the coin, no prob. I wonder if I caught a potential scam (maybe they pull the listing if someone catches on?) Possible, huh? Some people.