Brt-745. Wt = 10.28g. Diam = 19.5-21.1mm
Stevens Collection

Wt = 10.24g. Diam = ~20mm (from Zeno via RJ)
Photo from Vic Newey

Wt = 10.27g. Diam = 20.6-21.6mm (diam from RJ)
Photo from Noonan 8^th Feb ’23 (Puddester), lot 405