China
People's Republic silver "Year of the Snake" Proof 50 Yuan (5oz) 1989 Choice Cameo Proof, KM233. Lunar Year issue. In the original case, and mint-sealed soft plastic with COA #53. No significant flaws other than toning around the reverse rim. Very scarce, with a mintage of only 1,000 pieces.
Estimate: 800-1000 USD