1970s Italian Figaro Chain/Necklace, unknown mark help

[megahertz6970]

This Italian Figaro style heavy chain is from my mom's estate, it's stamped .925 Italy, and the piece also has this weird little mark. It's very abstract, and looks like an "F" of some sort to me, I've been on your site for about 2 hours searching, but have come up empty. If anyone can help me, I would be very appreciative! Thanks in advance, Maria, Louisiana