Unknown hstp

Who has info on this hstp ?
thanks
jp

JP

Contact George Kass. He has this identified. I was just at his house this morning and saw the picture of the box for this headstamp, but I do not remember who the maker was.

It is a mark patented by SFM in 1890, and after by Bischeiller (which was a subsadary of SFM) in 1902