Brt-430b. Wt = 4.56g. Diam = 22.8-23.4mm
Photo from Bob Johnston

Wt = 4.4g. Diam = ~24.2mm. Axis not given. Although it looks like it has a 6-dot separator, it is probably struck from the same dies as above.
Photo from Marudhar Arts, esale 47, lot 250