anyone ever find coins with advertising stickers on them?

[silvercop]

i just found another half with a red sticker on the reverse that advertises aunt chiladas easy street cafe. i was getting one of these about every 3 weeks or so and i thought it waS the same one and i was getting it back over and over. so about a month ago i kept it out and today i got 2 more of them. just wondering if anyone else had gotten any. i googled the cafe and it is located in hilton head sc

 

[DrDetector]

SC, I see those every now and then up in Pittsburgh. Also I seem to find a lot of halves marked with a 'MONKEY MONEY' sticker. A couple years ago I even found a silver clad with the sticker. I suppose that ruled out that it was someone's marking method for dumps.