Well, the 'experts' at Epay just yanked my auction since this was "of questionable authenticity." Go figure! So we will offer it here and they won’t get their fee! (And yes, the piece is indeed 19th century manufacture.)
The chain is in very nice condition as seen, and features some tiny stones or glass stones on the center piece. You could attach a fob or drop of your choosing to that center fitting. Overall length is about 10 inches.
Price is $30 postage paid. Email (firstname.lastname@example.org) always faster than PM.