How to Identify the Byzantine Miliaresion

What It Is

The miliaresion was introduced as a standard silver denomination under Leo III around 720 AD, filling a gap in Byzantine coinage that had relied mostly on gold and bronze for the preceding centuries. It became the empire's principal silver coin for several hundred years, particularly prominent from the 8th through 11th centuries.

Obverse Design

The classic miliaresion obverse shows a cross potent set on three or four steps, often within a border of dots or a plain circular border, echoing a design theme also used on some Byzantine gold reverse types. Some later variants add small facing busts of co-emperors flanking the cross rather than leaving the cross alone in the field.

Reverse Design

The reverse typically carries a lengthy inscription arranged across several horizontal lines within the field, usually a religious invocation combined with the names and titles of the reigning emperor(s), rather than a pictorial scene. This text-heavy reverse layout is one of the miliaresion's most distinctive identifying features among Byzantine coin types.

Size, Weight, and Metal

Struck in silver, the miliaresion is a notably broad, thin, and flat coin, typically around 23-25mm in diameter but light in weight for its spread, generally in the range of 2-3 grams depending on period. Its flatness contrasts with the cup-shaped, concave format adopted by contemporary gold coinage in the later 10th century onward.

Mint Marks

Miliaresia generally do not carry the same CONOB-style gold fineness marks used on solidi; instead, identification of period and issuing emperor(s) relies mainly on reading the reverse inscription's imperial names and titles, since most examples were produced primarily at the Constantinople mint with only limited explicit mint-city labeling.

Telling It Apart From Similar Coins

The combination of a cross-on-steps obverse with a multi-line text reverse is fairly distinctive among Byzantine coinage and helps separate the miliaresion from contemporary gold and bronze denominations, which favor imperial portraits or Christ imagery as the primary obverse device. Its broad, flat, thin-silver format also differs clearly from the smaller, thicker silver fractional coins issued in some other periods of Byzantine history.

Judging Condition at a Glance

Because the design relies heavily on legible text rather than a detailed portrait, judge condition mainly by how completely the multi-line reverse inscription can still be read and by the crispness of the cross-and-steps obverse design, both of which wear down or corrode with extended circulation.

Authenticity Red Flags

Be cautious of coins with a reverse inscription that does not correspond to any documented emperor or co-emperor pairing, a diameter-to-weight ratio inconsistent with the coin's expected broad, thin, light-silver profile, or a surface that looks artificially toned to mimic old silver tarnish. Legend lettering that appears too modern or regular in style compared to genuine period engraving is also a signal to look more closely.