Plum

[1933 FORD NUT]

Originally Posted by DonVoigt

I think it is from two "tools", one used longitudinally and the other laterally; or perhaps a tool and a
grinder.

It would be near impossible to duplicate, i.e. "fake". JMHO.

Agreed on the pain to duplicate .
HK's are rich in these kinda things .


Note OP's does indeed have chattering on edges .
Top got a little more finishing possibly to make the extra mark fade ?
Note how crisp his " S " is .

Compare the receiver notch on all .
All Krieg and no other MFR's notches look like this .