Watch List notes:

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

Circa 5th-6th century. Weight of 3-ounkia (Brass, with traces of silver inlay, 31x31x9mm, 79.96 g), a very thick, square commercial- weight with plain edges (as MAH B1), ounce of 26.65 g. Long Latin cross between Γ° - Γ; all within a wreath of laurel, with an annulet at 0°, 90°, 180°, and 270°, itself within a scalloped border. Rev. Plain. MAH 49. Dark green patina as found. Extremely fine.

From the Eparch Collection, acquired from Baldwin's in London.
Note that this is much thicker, and thus smaller, than the preceding lot, even though they basically weigh the same.