I acquired a fired 7.92x57 case on Saturday with the following headstamp:
The case is brass, and is fitted with a berdan primer with a brass cup, held in place by three stake marks. It has black annulus. The neck crimp looks very FN to me, which would seem logical, as I have seen a similar hstp on municion.org listed as being made by FN on contract for pre-revolution Iran.
Can anyone tell me if this is correct, and what the headstamp actually translates to? Any info would be helpful.