Anyone own one of the Original Whitworth Express rifles that were put together in Manchester England?
If possible I would like to know what British proof marks are on these particular rifles.
Also what number if any is stamped on the right side of the receiver bridge. (near the threaded screw holes for peep sight mounting)

Also does anyone have any factual info on what year the Manchester Whitworth Express rifles ceased production/assembley and the US versions started?

TIA for any info forthcoming.