Thanks for reply mate.
I cant find any proof marks.Only the numbers and letters previously posted.
Rear sight is a Snider military as described in Skenertons Treatise on the British Military Martini.Pge 39
I've already checked out the martini sights without any luck.
I believe a 2 1/2 inch 600 nitro case will fit in the chamber,( a loaded 3 inch is to long )
I was going to post some pics however HUNT 101 is on the blink tonight..
Al