Antique gold watch chain.

Hi,I’m hoping some of the watch chain collectors might shed some light on the history of this watch chain I’ve just acquired ? Looking at the fancy design I'm thinking it’s an Albertina ? It’s stamped in three places,9CT on the T bar,GOLD on the dog clip and makers initials of B.G inside an oval,on the end link of the chain.The only maker that my research came up with was a London one,Benjamin Alfred Green c 1850’s. ? Condition wise it’s really good but does have a tiny chip on the carnelian stone.It’s really nice ??
Any info would be much appreciated.
Thanks