1936 Krieghoff

[1933 FORD NUT]

This is a late 1936 and pretty much the same as 1937"s .
Lines and " circles " are normal and should be there .
Assuming you mean the " circles " on the rear frame sides ?

All are machining-finishing marks .

On the " circles " most HK's have a matte - sand blasted looking finish in that area .

Not all though as a few late ones like the 1943 serial 11411 in Jans third reich lugers and my 1943 serial 11567 are not blasted looking and the area is kinda shiny - with circles of course .

NO END to the little details to study on honest HK's .

Originally Posted by cirelaw

What causes the lines and circles on the receiver? My 1937 Kreighoff has neither~