Watch List notes:

The Eparch Collection of Roman, Byzantine and Islamic Weights
LATE ROMAN – BYZANTINE COMMERCIAL WEIGHTS

Circa 6th-7th century. Weight of 1-libra (Brass, once inlaid with silver, 57x15mm, 330.21 g), a thick discoid commercial-weight with two small grooves on the edge (as MAH A 13); a flat recessed bottom with no visible centering hole and a wide raised rim; and a flat recessed top with a raised rim and a very small centering hole, libra of 330.21 g. Within a double wreath divided into four quarters by an annulet at 0°, 90°, 180° and 270°, Latin cross above ??Α. Rev. Plain. MAH 2. A very solid and impressive weight, with a dark green and red patina. Some encrustation on the edge and on the bottom (probably obscuring the centering hole), otherwise, extremely fine.

From the Eparch Collection, acquired from Baldwin's in London.