Hey Damien. This is a very interesting subject indeed. This one may muddy the waters a little bit more. It's about the barrel date on an original all matching Lithgow rifle, action dated 1923, barrel dated 12 '24, with a coachwood butt dated 1925. a nice example of how Lithgow experimented with coachwood in the 1920's. You will see on this one the month is stamped in a different size font to the year, suggesting the year and month were stamped at different times.