Mog-4605. Wt = 20.51g. Diam = 23.4-24.9mm
Photo from Bob Johnston

Wt = 20.6g. Diam = ~24mm
Photo from Zeno 252058, posted by drnsreedhar

Wt = 20.1g. Diam = ~21mm. May be RY 45
Photo from Zeno 115532, posted by Ansari