The Mauser Oberndorf Serial number on the receiver ring and in the barrel channel on the stock puts it in early 1910. Rigby was the sole importer of Mauser to England until 1912. The 25 that was the last two numbers of the long caliber specification on the barrel under the stock and when I first look at it thought it was the year. I will get the information on this rifle from Rigby when they are back from Holiday on January 02, 2018.