Denazified L/53 with strange core

[AUSGANG]

Sorry about the cruddy scan (the cross is hand vaulted) but my question is about the core of this L/53 pin back. The core seems to be brass with a nickel plate over it. It can't be seen from the scan, but in hand, the date appears as a silver color but the rest is brass...What's going on?

[sanya13]

Hí ,You tried that to magnetic the inner core?
because lot of maker usually used primer coat
and maybe this the such the color ,because worn out
not sure that everything is what it seems

there are in the example :
this the Otto Schickle piece
with magnetic core but seems on the pictures that brass core

[boch_62]

Sanya is right

Regards
Jarek

[AUSGANG]

Thanks, sure appreciate the replies! The core is non-magnetic, for sure...