Mog-5850. Wt = 10.26g. Diam = ~24.04mm
Photo from Zeno posted by asm
Wt = 10.36g. Diam = ~26.1mm
Photo from Amit Mehta
Wt = 11.55g. Diam = ~25.2mm
Wt = 11.58g. Diam = ~23.3mm.