I really don't know much about this but that hasn't stopped me yet. What I see as interesting is that the two examples shown are both in the same photo "positioning", both are 1940 42s, black & white photo, and that the mum is on the same place as was placed on a Imperial rifle. Never have seen one ground off, and I don't think I have ever seen one on a Nambu. The chamber area would not be an easy place to place the mum. If not done at an arms factory, wouldn't it be easier to mark on a flat surface? Why would they be marked and not Nambus (if they weren't) which were made for ossifers in an era in which the weapon and the soldier were servants of the Sun God? John S, can you do some of your super secret computer stuff and look at the stampings for halos?
rk
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