Found a rusty and bent pair of shears at the second hand shop.
After straightening them, I put the shears in vinegar to remove the worst rust. Then worked them with rotating steelwire brush on dremel to remove deep & fine rust, oiled them and finally sharpened them.
The stamp reads Würpel & Bronner, which according to  was founded 1865 in Germany and since 1910 no longer appears in the records, so that dates them roughly.
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