Iron Cross frame/pin ID?

[streptile]

Hi,

I'm almost certain this is TR-made. Can anyone help pin the frame, with its distinctive flaws, and the pin to a particular maker?

Thank you in advance.

[grueni1208]

Steinhauer & Lück, but with new 1870 core.
I only know these versions with 1914 core's.

Regards

Daniel

[fabri-online]

Hi guys,
I agree with Daniel but I have some doubts about TR-made because date is 1870.
It means passed about 70 years after French-Prussian war and I think no one manufactured these cores for veterans during the WW2. Just my idea.