I recently acquired a Sands $25 Gaming Token. It is marked 1986, first edition, .999 silver, 1.5 troy ounces and has an 'S' mint mark. It is in it's original plastic case, with a wine-colored draw-string bag, and is in mint condition. Could anyone please tell me what this token might be worth among collectors?

Best Regards, Curtis cu454@aol.com