Brt-1524c. Wt = 1.68g. Diam = ~15mm. Axis ↑↓
Photo from Noonan 8^th Feb ’23 (Puddester), lot 830

Axis ↑↓
Photo from Pridmore

Wt = 1.78g. Diam = 14.8-15.2mm. Axis ↑→
Photo from Bob Johnston