I would like to ask you about this RK.
It messures 44,8mm both ways (without ring)
It is non magnetic.
The band reponds as it should to "fire"
Details on both frame and core are very sharp and defined.
it has a semi glossy finish.
To me and my untrained RK eye (never handled one ) frame and core looks like Steinauer und Lück ??
The seller is a 87 year old guy, from who I have bought other german militaria in VERY good and original shape !
He is not a collector as such, but has most of the things from 45, where he pickt it himself. The RK, he got sometime before 1955 !
Looking forward to here your verdict
PS I dont know what happened to the large suspension ring