Wyo. Stat. Ann. § 9-4-1302
(a) As used in this article:
(i) 'Legal tender' means a recognized medium of exchange for the payment of debts and taxes;
(ii) 'Specie' means:
(A) Coin having gold or silver content; or
(B) Refined gold or silver bullion which is coined, stamped or imprinted with its weight and purity and valued primarily based on its metal content and not its form.