Mog-4683g. Wt = 3.6g
Photo from Zeno 135068, posted by prasau

Wt = 3.4g. Diam = ~ 4 x 9mm
Photo from Zeno 273797, posted by bimalt

Wt = 3.35g. Diam = 10.7 x 12.0mm
Photo from Marudhar Arts, esale 23, lot 404