Book on Clabrough will be out next year. Most Clabrough's I have seen that are marked 11 in proof are 10 gauges. The 11 is the bore size not the chamber size. Flintfan is correct. I estimate the the gun to have been made in 1875 and after the 1875 proof mark was in effect "NOT FOR BALL". I have in my study ser. # 1907 and it has the 1875 "NOT FOR BALL" stamp. This gun was ordered to be made without chokes. I would say it is a medium grade. most of their guns in this early period are: medium grade,are side lever opening, most have a wedge fore-arm fastener, a screw-in hex. nut firing pin, one locking slot under barrels and a steel butt plate. Ser. # 1907 also has the San Francisco address. Most have LONDON in the address. Perhaps these guns were sold through the S.F. store?
Larry,
So good to see you posting here. I can not wait for your book to come out. Please let us know here when it becomes avaialable.
For those that do not know, Larry is the leading researcher and expert on Clabrough.
Pete
