EK2 Iron Cross / Eisernes Kreuz C.E. Juncker with LDO marked L/12 with non-magnetic inner core

I have this item on “commission” sale, I just trying to help the owner sell.(I did not set the price)
Part of a larger collection, presumably, other rare pieces will become available in the later time.

EK2 C.E. Juncker marked L/12 with WFS inner core variant

These types not common types, because not the usual unmarked pieces, but have on the frame back site a so called LDO marked mark L/12
The mm total and sharp, very nice collector’s piece!
Another interesting thing about this is that the inner core is not made of iron but of zinc.
As uduk, Junker bought the company Albert Werner & Sohn along with the remaining companies.
We call these WFS Juncker pieces, as they are not the traditional Juncker-made 3-Flaw type frames and the inner core pattern is not designed by Juncker either.
This piece is also truly unique, as the frame comes from Juncker (3-Flawed frame), but the core is WFS, the design is marked with an addition, which makes this piece even rarer.