How to Identify the Sassanian Silver Drachm

What It Is

The silver drachm was the principal coin of the Sassanian (Sasanian) Empire of Persia, struck continuously from the dynasty's founding under Ardashir I in 224 AD until the empire's fall to Arab-Muslim conquest in the mid-7th century. Its design conventions were so influential that early Islamic coinage in the region initially copied its layout.

Obverse Design

The obverse shows a bust of the reigning Shah in profile, distinguished above all by an elaborate, often uniquely shaped crown—wings, crescents, stars, or korymbos (a globe held by a ribbon) were used to make each king's crown visually distinct. A Pahlavi (Middle Persian) legend naming the king and his titles curves around the bust, and small crescents-and-stars often flank the portrait, called "hairstyle" or margin ornaments.

Reverse Design

The reverse depicts a fire altar, the central symbol of Zoroastrian worship, usually flanked by two attendants or guards facing the flames. Ribbons often decorate the altar shaft. Regnal year and mint name in Pahlavi script typically appear to either side of the altar's base.

Size, Weight, and Metal

Sassanian drachms are struck in silver on a broad, thin, slightly dished flan, typically 25-33mm in diameter but only about 3.4-4.2 grams in weight—large in spread but light for their size compared to more compact ancient coinages. Edges are irregular and hand-struck, often not perfectly round.

Mint Marks and Dates

Unlike most ancient coinages, Sassanian drachms commonly record both a mint abbreviation and a specific regnal year in Pahlavi letters positioned in the reverse margin, usually to the left and right of the fire altar. This makes many Sassanian drachms more precisely datable than most other ancient coins, though reading the abbreviations requires familiarity with Pahlavi script.

Telling It Apart From Similar Coins

Because crown styles changed with each king (and sometimes mid-reign), the crown shape is the fastest way to identify which Shah issued a given drachm. Compared to later Arab-Sassanian transitional coins (struck after the Islamic conquest), genuine Sassanian-era drachms lack any Arabic script, which was added only on the hybrid issues that followed.

Judging Condition at a Glance

Look at the crown details and facial features for sharpness, and check whether the fire-altar attendants and flame details remain distinct. Because the flans are thin and broad, edge cracks and off-center striking are common and do not necessarily indicate heavy circulation wear.

Authenticity Red Flags

Modern fakes sometimes show a crown design that does not match any documented Sassanian king, blundered or nonsensical Pahlavi legends, or a flan that is too thick and small for the period. A weight well outside the roughly 3.4-4.2 gram range, or metal with a base, dull gray look rather than silver's typical luster, both warrant a closer second look.