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German 77mm Bi-Metal case makers mark


Well-Known Member
Today I picked up a slightly trench-arted German 77x230R Bi-Metal case. It is stamped with the makers mark shown in the attachment.

The other markings are: 276, 15, Sp61.

What factory does that maker's mark represent?

Thanks in advance for any help.


  • 77bimetal_marking.GIF
    2.5 KB · Views: 7
Thanks Krt7,92.

On the wikipedia it says Rhinemetall had several factories, which one was likely to have made my shell case in 1915?