1950's
You will have to contact Sako. Falls outside published data.
Someone at the Sako collector club might know.
100-1000 dollars
Remington, Winchester, Sako to name a few
Impossible to answer without the serial number.
No English published sn data that I am aware of.
MSN has a Sako Collectors group.
The twist rate is 14"
Depending on condition 400-1000
No sn data published in english, 100-1000 depending on specifics
These rifles made in Finland
I have a sako L461 serial no 97578. This was purchased in 1968 , so, I guess no 86302 would be somewhat older.