Watch List notes:

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

Circa 3rd-5th century. Three-ounkia weight (Bronze, 26x21mm, 81.28 g), a commercial-weight in the form of a flattened sphere of doubly truncated form, with a centering point on the top and the bottom; edge as MAH A39, ounkion of 27.09 g. Engraved on the top with and Γ; originally silver-inlaid but inlay missing. Rev. Plain. CPAI T 3, Pera 2, 15. Surfaces encrusted as found. Extremely fine.

From the Eparch Collection.