After a long absence from the hobby I want to post this unknown primer for identification. I hope I haven't lost my memory completely during this time because I find it alarming to have a WW1 primer which I am unable to identify 
A few of them were found on different places in Germany. Both were demilitarized short after 1st WW under supervision of the Military Inter-Allied Commission of Control. For sure they are from 1st WW.
Overall they have nearly the same size as Krupp primers like C/12 why I put a Krupp primer on the photos for comparsion. But some dimensions are also different:
Sadly completely unstamped. One more difference to Krupp primers, the base is straight while Krupp primers have a tapered base. I have never seen those two slots for a key which are different from british primers.
All ideas are welcome
A few of them were found on different places in Germany. Both were demilitarized short after 1st WW under supervision of the Military Inter-Allied Commission of Control. For sure they are from 1st WW.
Overall they have nearly the same size as Krupp primers like C/12 why I put a Krupp primer on the photos for comparsion. But some dimensions are also different:
| Krupp | unknown Type | |
| Diameter | 33 mm | 33 mm |
| Thread Size | Withworth 27,3 mm x 18 t.p.i. | Withworth 28,4 mm x 14 t.p.i. |
| Overall length | 18,2 mm | 18,7 mm |
| Base thickness | 5 mm | 6 mm |
Sadly completely unstamped. One more difference to Krupp primers, the base is straight while Krupp primers have a tapered base. I have never seen those two slots for a key which are different from british primers.
All ideas are welcome
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