Four Buyid coins in t he collection of t he American Numismatic Society, struck between 358- 68H. /A.D. 968- 79 at two mints in Jibal province, illustrate a phenomenon unique in the history of Islamic coinage.! They concern the status of a die engraver named al-Hasan b. Muhammad. A silver dirham bearing his signature was first noted by George C. Miles and published in 1938. It was at that time the only Islamic coin known to bear t he signature of a die engraver. More recently, four additional coins have been located which shed more light upon the career of this artisan.
- Islamic numismatics,
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