After literally years of peeking, I finally found a coin in the Coinstar reject slot at the local supermarket. Foreign? No. Mutilated? No. Medal or token? No. 1999D Roosie of normal weight and size, with no apparent problems? Yup.
It's funny, I haven't even thought about checking reject coin slots for way too many years. I remember, as a kid, it was mandatory to check all of them as I walked by. I'll see if I can contain the urge to check them now, as I walk by. Bruce