I looked long and hard for my SU one, and paid dearly for it.

I have a good one on ebay

http://www.ebay.com/itm/Union-Plaza-Casino-5-Bicentennial-Casino-Chip-A-1976-Beauty-from-Las-Vegas-/231150641692?pt=LH_DefaultDomain_0&hash=item35d1a6e21c

And there is another one out there on ebay with a BIN of $39 and it may be better than mine.

But not NEW. I feel your pain.