Brt-1604c. Wt = 11.64g. Diam = 29.7-29.9mm

Photo from Bob Johnston

 

 

Photo from Glendining, 3-4 October 1988 lot 509 (from Bob Johnston)

 

Wt = 11.63. Diam = 30.3mm

Photo from Zeno 113287 posted by Lingen