Belt Mount modelled on those on the Museum of London belt. (Cat. no 89.65)

The originals are copper alloy, and attached with a separate central rivet, these have a single central integral square section rivet.

The originals are ~11mm across each arm, and these match those proportions.

10x 2mm square rivet/shank

Shown on a 19mm / 3/4" strap.