uwe_gl,
I don't know that trademark, but maybe others on this site do.
From the way the bore diameter is marked. your drilling was made between 1893 and 1912, so your 1910 date might be correct. It was nitro proofed, if you see the word NITRO in block letters. it was proofed in Suhl, if the word NITRO is in script letters, it was proofed in Zella-Mehlis. It is very likely made in or near the town in which it was proofed. By the way, the drilling seems to be in good shape.
Mike