I have a 1945S penny that I found. Nothing special about that, but on the reverse side is a sticker that says "Bing Crosby 9 pm KGO." Apparently these were applied to pennies or other coins to advertise for this radio program. KGO is a radio station in San Francisco. I am wondering if anyone else has ever come across one of these and, of course, if there's any additional value to it? I've attached a picture. Thanks, Bob Spriggs