A device composed of an arrow and bar with termination can be observed on this inscribed, dome stamp seal. An inscription encompasses the device. Devices are a common motif on Sasanian seals and are interpreted as symbols associated with a specific tribe or clan. Many dignitaries had an emblem or group of letters, sometimes representing an abbreviation, engraved on their seals. Some scholars have suggested that the letters on this kind of device correspond to the name of the proprietor stated on the seal. Others suggest that the device represents the first letters of a name and therefore an abbreviated form of a name. In some instances, however, there is no relationship between the letters and a name.

Inscription: gwšnsp d't ZY mgw ZY hwt'd'dk'n / gušnasp-dād ī mow ī xwadādadagān
Translation: Gušnasp-Dād, Mow of Xwadādādagān

Translation provided by Touraj Daryaee and Kiarash Gholami

References:

Christopher J. Brunner. 1978. Sasanian Stamp Seals in the Metropolitan Museum of Art. New York: The Metropolitan Museum of Art.