Check out this one folks ... only 20 known to exist according to Campiglia's catalog.

http://www.ebay.com/itm/25-SILVER-MINE-casino-chip-Cripple-Creek-Colorado-RARITY-ALERT-/231095772417?pt=LH_DefaultDomain_0&hash=item35ce61a501#ht_297wt_1128

I am listing the remainder of my Cripple Creek, Colorado chip collection today and tomorrow. Some nice chips being offered. My ebay name is mrnjchips.