Rocketman wrote: "The serial leads me to guess it is a just pre-WW I gun; anyone have an A&N dated from the books in this (#57555) serial range?"

I own a 16 ga with an earlier serial number of 445xx. The engraving is a little different and it does have a dolls head and hidden third fastener. According to my Smith the proof marks date it between 1896 - 1904. Not sure if that helps you too much.

Thanks, because you have jogged my memory to write the U. of Glasgow to get definitive info on mine.