TURKMENISTAN: silver 6-coin proof set, 1999, set of 6 different 500 manat coins, The "Endangered Wildlife" series, in original case of issue from the British Royal Mint with Certificate of Authenticity, scarce set, Proof, S, ex Hans Mondorf Collection. Wildlife portrayed on the coins are the Turkmenic Jerboa, Houbara Bustards, Saker Falcon, Cobra, Caracal, and Tiger.
Estimate: 300-500 USD