Watch List notes:

YEMEN: Arab Republic, 6-coin proof set, 1969, KM-1a, with gold 50, 20, 10, and 5 riyals and silver 1 and 2 riyals featuring; Lion right, Bactrian camel right, Gazelles leaping right, Falcon head amongst clouds, Lion head, Figure on camel right, in original green box of issue, No. 1829 of a mintage of 2000, Proof, S.

Estimate: 4,000-5,000 USD