I have a early 1 million serial numbered Koshikowa ( sorry Grammer) with what looks like somone went a little crazy with a concentric circle stamp on the mum 2 strikes. it also is a school rifle with double school stamps. It also bares the two 00 serial 3 prefix.
Would you say this is a defaced mum or a removed from service stamp over the mum? I may be think the stamp guy was having a bad day when this was stamping it as out of service.
There are usually three circles, in the mum. Sometimes, the mum is surrounded by zeros. The rifle was removed from service, and relegated to school use.
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