Poldihütte filed for trademark protection in the U.S. of A. in 1910:



Note it is sourced for bars and blocks of steel, etc. This is the mark of Poldi, term of affection of wife Leopoldine of Wittgenstein and I don't care what anyone notes otherwise, if it is not the image of Poldi, they are incorrect. Trademark date of 7.18.1893

Kind Regards,

Raimey
rse