Luckily...I use plastic tipped darts. I've been very carful too. Its kind of a deceiving picture. There's actually quite a bit of room between the dartboard and the chips display. More then enough room for even a terrible dart thower to play and still not hit chips. At least so far. But even so, I make sure theres never any obsolete chips in that last display. Only common and current chips from california, detroit, indiana, etc.

The middle display is all Nevada chips, and the one on the far left is all foreign chips. All are current chips with the exception of: the foreign chip display...3rd row from the bottom, next to the last one on the right. It's a yellow and black BJ-coin chip. Any ideas what it might be???
Hint: ones in good shape bring $$$