You will have to contact Sako. Falls outside published data.
Great rifle.
Sako, and Remington are two different manufacturers.
Proof mark
It is the P94s, a 22 rifle.
It will be marked on the barrel.
No "code" involved. You just have to find a source for SAKO serial numbers.
Someone at the Sako collector club might know.
100-1000 usd
80's or so
100-1000 USD
100-400 USD or so