Brt-167c. Wt = 11.57g. Diam = ~19.4-20.4mm

Photo from Bob Johnston

 

RY not visible but dated AH 115x. Wt = 11.55g. Diam = 19.5-20.1mm

Photo from Bob Johnston

 

Wt = 11.64g. Diam = 19.0-20.0mm. RY 2x based on small diameter

Stevens Collection

 

Wt = 11.63g. Diam = 19.0-19.9mm. Ry 2x based on small diameter

Stevens Collection