Watch List notes:

The Eparch Collection of Roman, Byzantine and Islamic Weights
BYZANTINE COIN WEIGHTS

Circa 6th-7th century. Weight of 12-nomismata (Brass, 33x8mm, 53.73 g), a discoid coin-weight with recessed top and bottom, centering holes and an edge between two grooves (as MAH A23), nomisma of 4.47 g. Ν - ΙΒ with punctate scrolls above and below. Rev. Plain, save for the centering hole. CPAI 3, 2, 546. Cf. MAH 114. An elegant weight with a dark grey-green patina. Extremely fine.

From the Eparch Collection.