Anzac - I also recently came up with a very similar 1930 FN Mauser. I posted on Gunboards and received a lot of positive comments. Since your rifle's serial is in the 79xxx range and mine is in the 71xxx range, a lot of those comments would apply to your rifle. Of course, I have no idea on your oriental buttstock markings, as my rifle likely did not make it overseas. The other postings would likely be of interest to you. Regards.

FN 1930 Mauser in 7.9x57