stylized Bow or "f" sterling hallmark, please identify 1960's brooch

[ShopperHopper]

I am hoping someone will recognize this hallmark, I have seen it a couple of times but don't recall the maker.





I have searched the internet and these forums but have found nothing under "f" and "bow" actually turns up bow shaped brooches an phrases like "I bow to your knowledge" which I will do if you can identify this mark. I believe it is fairly common, but not common enough as I have been scanning hallmark images for hours to no avail. I hope I have posted this in the proper forum

[ShopperHopper]

I am unsure how to edit my original question, but I wanted to add keywords in case anyone is searching for the same information, I hope that is allowed:
Stylized bow, bow logo, stylized f, script f,

[PennyT]

That is a stylized B and the mark of Beaucraft inc (Providence RI 1947-2004)