Watch List notes:

UMAYYAD: 'Abd al-Malik, 685-705, AR dirham (2.86g), al-Rayy, AH79, A-126, Klat-394, lovely bold strike, EF, RRR. Extremely rare mint/date combination (2 cited by Klat, 3 more on CoinArchives).

Estimate: 2,200-2,800 USD