In the book "The history of W&C.Scott," authors, John A.Crawford & Patrick G.Whatley [retired managing director of Scott's] state;"The Imperial Premier"bar action side lock was produced from 1897-1932.It sold for $1200 in 1930.It was considered by some experts as possibley the finest shotgun model ever made.
I had the privelege of spending several days in the Scott factory during the 1970,s at that time they were still making best guns for the London Trade,as well as a complete range of their own boxlock and sidelock guns.