What a great example!
Interesting that a 1912 action would lay in stock (or perhaps the whole rifle) before finally being sold to a customer in 1939.
Also, I cannot see any proof marks on the gun, not even the view mark which is normally found on the receiver ring, is this because it was delivered to a customer outside of the U.K.?
If it does have British proofs, are they pre or post 1925? Did the rifle proofs change in 1925 like the shotgun proofs did - I am unsure.
I can only imagine finding a rifle like this today and with all the hype around Rigby right now, no better time to come across one!