Your rifle was made in 1928 and was not in my database but it is now, thanks.

Over the years I have seen rifles with letters and numbers stamped into the buttstock. One explanation I was told is that some countries put the number on the rifle when you entered the country and checked it when you left. If I remember it was in Africa.

Hopefully someone with more knowledge of this or who knows the reason your stock has numbers will post.

MP Sadly Deceased as of 2/17/2014