My copy of Australian S.M.L.E. Variations by Skennerton and Labudda contains a yearly production table for Lithgow Small Arms Factory that indicates that over 18,500 smles were manufactured by early 1915. Since my smle’s receiver s/n is 14xxx it was manufactured in 1914 or 1915. My smle’s bolt has a B prefix which was used from the early 1920’s to 1941. It also has a magazine cutoff which were installed again during the 1920’s. There was no demand for smles after WWI so Lithgow only produced about 20,000 during the 1920’s. They kept a core crew to make a few with materials on hand as well as newly manufactured parts so their skills wouldn’t be lost. I also have a Lithgow SMLE with a s/n of 44xxx which was made in 1916.