Watch List notes:

ROMANO-BYZANTINE. Æ 1 Ounce(?) Spherical Commercial Weight (20mm, 23.75 g). Large M; cross above; all within border of incuse annulets / Blank. Cf. Bendall, Weights, pp. 24-5 (for other spherical examples); Weber –; Geneve –. VF, green patina, traces of deposits in devices.