I just looked it up the cross on the butt stock indicates emergency use only. That rifle may be a pre December 1916 manufacture date that hasn't been updated to a MkI* status. Somewhat rarer than most that were in Britishstores prior to WWII and received the Weedon refurb to bring them to the MkI* standard. Check the bolt, reciever and stock for any * stampings. If none then it is somewhat rarer than most however the original rear sight was stamped with the rifles receiver number. Without the original matching rear sight it actually brings the value down some.