Watch List notes:

BAHRAIN: Isa bin Salman, 1961-1999, 8-coin proof set, 1983/AH1403, KM-PS3, silver off-metal proof set including 1, 5, 10, 25, 50, 100, 250, and 500 fils, including F.A.O. and Opening of Isa Town commemoratives, in original British Royal Mint case of issue, numbered 07275, issued by the Bahrain Monetary Authority with an authorized mintage of 15,000 sets, but likely far fewer were probably manufactured; all sets were made available on 9 July 1984, set of 8 coins.

Estimate: 150-250 USD