Quinarius - Amdan Bayyin Monogram type, large bust

The Himyarite quinarius coinage derives from South Arabian imitations of Roman silver that filtered into Yemen through Red Sea trade networks, progressively abstracted over generations until the original Roman prototype became almost unrecognizable. The monogram of Amdan Bayyin — a Himyarite ruler attested in South Arabian inscriptions — anchors this type to a specific dynastic authority, though precise regnal chronologies for early Himyar remain contested among epigraphers.

The "large bust" designation distinguishes this die grouping from the more common reduced-bust variants in the series.