Ted will probably change his production dates when he sees this receiver. Lapin has too many mistakes to be reliable for anything, and he hasn't corrected them in his later editions.
When you physically see a rifle that changes the production date range, you have to accept it over some one's opinion. A good example is the Nagant revolver, production didn't start until 1899 according to almost every sounce. How do you explain the 1898 dated cutaway in the Tula Museum and examples of deactivated revolvers in Russia with 1898 dates and serial numbers in the 14XXX range?
If the rifle was from the range of 1910 to 18 it would have a 910 to 918 tang date and the arrow would be offset to the side, not centered.
Joe