The internal reject bin is a small 3 by 2 cup that goes under the counter wheel. If you see a tech open the machine you can see it. Most of the time its just mangled coins but I have found IKE dollars stuck in there. Mostly clads but my LCS will give me 1.05 for each IKE I give them. Then they turn around and sell them for 1.50 each. I love coinstars. Lately though people have been more sauvy about keeping the coins the machine rejects. I mainly like to ask them if the machine rejected any coins, that I can add it to they returned total, or better yet, I will take the canadian that the machine wouldn't take. It's no skin off my nose and most of the time its newer canadian coins, but I have found a canook quarter and dime that was 80% silver that way.
Got to go to work,
Laters, Garoulady