question on receiver mum stamp ?

[J-ROD]

This mum qualifies as scrubbed in my book. Any mark is considered a canceled mum. Just like the small circles on rifles sold to other countries or used for training. After the war, many different ways were used...filed, chiseled, peened but must were hit with a grinder as this was the fastest. Yours wasn’t hit too hard with a file/grinder and has since rusted and appears to look more like the receiver.

Mums were usually scrubbed after the war ended with piles of them available as war trophies for departing service members. Even if one was picked off the battlefield with a mum, the service member was usually told to remove the mum before returning to the US. This is what I’ve heard many times, ordered by Gen MacArthur to help the Japanese Emperor save face as the chrysanthemum was his symbol.

I’ve searched the interwebs to see if I can find this order but haven’t found anything concrete. Just secondhand stories from returning vets.