Watch List notes:

Umayyad, temp. 'Abd al-Malik b. Marwan, dirham, 79h, no mint, 2.87g (Klat 1, same dies), with horn silver but good very fine and very rare Damascus as the centre of the caliphate had initiated the first purely Islamic gold coinage of dinars in 77h with no mention of the mint and it is assumed that these very rare dirhams, similarly without mention of the mint, were struck there too. The issue must have been experimental because later in the year the name of the mint, Dimashq, appears in the obverse margin (as Klat 323a, apparently unique, from the collection of His Excellency Hamad bin Abdullah al-Thani)) and finally, where it was to remain in subsequent years, in the obverse inscription before the date (as Klat 323b).
(Estimate: 7000 - 10000 GBP)