N01-
NO2-
NO3-
NO3 again-
They are all three from Enfield Lock, dated 1915, 1916 and 1917, with post war rebarrel work before going to Australia.
So is the numbering a holdover to the MD numbers? There are no "MD" marks on these rifles and only one has the inventory number on the buttstock.
-----krinko
In the same order