Brt-464c. Wt = 2.65g. Axis ↑↓

Photo from Noonans, 8th Feb 2023 (Puddester), lot 293 (Part of Glendinning 18-19 October 1982 (Pridmore), lot 437, described as mint specimen set). (ex Baldwin (Fore), Glendinning (Pridmore))