This unusual kashkul bears the "signature" of a certain Dervish and the date of 1028 (1619-20 AD) on the small spout. The style of script and decoration makes a date at the end of the Safavid period appear to be more likely. The style of script is certainly consistent with a Safavid dating, and the content is not that which is normally encountered on such vessels. The upper band is the nad-i 'Ali together with Arabic prayers; the lower cartouches contain Persian verses partly concerning 'Ali and his two sons.
This is not the only example of a Safavid kashkul: a similar metal example was produced in 1015A.H./1606A.D. by Hajji 'Abbas, probably a member of an armourer's workshop of Isfahan (Allan J., Islamic Metalwork, The Nuhad Es-Said Collection, London, 1982, pp.114-117, no.26). Another undated kashkul with the same signature is in the Victoria and Albert Museum (Pope A., A Survey of Persian Art, Oxford, 1938, pl.1393C).