R. Hanbury 10 bore Sidelock

[Wes Shirah]

I purchased this gun last week off of GI. She's a 10 bore SxS manufactured by R. Hanbury...Just a hair over 9 lbs, 32" Damascus Barrels (St. Bernard Damascus), with double triggers. I've gone thru my library & done every internet search I know to do...but have yet to locate a single reference to R. Hanbury. I assume this gun is English, but also am unable to identify what type of action this. Can't find any other gun with the pin configuration this one has, not to mention the shape of the sidelocks. If anyone can help shed some light on this gun origins...I'd be most appreciative.