A Byzantine denomination of a reduced, lightweight solidus of 22 siliquae or carats issued in the 6th and 7th centuries AD.
- Not to be mixed up with the Nomisma Tetateron of 22 siliquae or carats, which was introduced by Nicephrous II (reigned 963-969).
Lit.: Ph. Grierson, Catalogue of the Byzantine coins in the Dumbarton Oaks Collection and in the Whittemore Collection II-2
(1968) pp. 11-17.