These are complicated guns as they were sourced as fully build rifles, barrel actions (someone put in a stock) and separate barrels and receivers and not necessarily did the receiver get a Sako barrel put on it.
A few came into the US as bought in Europe.
The area I would need to see is on the left side under the front scope mount.
There may be something under the front of the barrel label wise. With your SN there should be though Sako can be odd.
Possibly on the left side in the front scope mount area
All those little hashes and stamps are just proofing and inspection stuff that are not documented to any era or gun in particular.
the 110/28 would need a picture of what part of the gun its on to know if its got relevancy. It should have something like AIII stamped in it, AIV, unlikely L61R and some reference to Bofers steel.
You can PM me and I will get you my email if you want to send pictures