I'm going to go out on a limb here and say that the pin back
is an Otto Schickle and the screwback is a P&L.
Agree
In fact on these two examples (which is not always the case) the crosses have the very typical WWII-era hardware for, respectively, Schickle and P&L -- in addition to the recognizable obverse die characteristics.
Best regards,
Streptile
Looking for ROUND BUTTON 1939 EK1 Spange cases (LDO or PKZ)
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