Mog-4279. Wt = 11.45g. Diam = ~25mm. Broad flan. Perhaps a presentation issue?
Photo from Zeno 303314, posted by Lingen

Wt = 11.44g. Broad flan. Perhaps a presentation piece?
Photo from Steve Album, sale39, lot 875

Wt = 11.48g
Photo from Todtwalla, sale 97, lot 805