No known sn data published in English
Impossible to answer without the sn.
The L579 was a model number that was used by Sako.it describes the action type.The info that you provided will not indicate what caliber that you have.Your Sako rifle should be marked as to what caliber your rifle is chambered for,somewhere on the firearm itself.
@ late 70s
@ 28 years old
100-1000 USD depending on specifics
AROUND 1986
@ 40 yrs old
100-1000 USD or more depending on specifics
Roughly mid 1960s.
sometime in the early 60s
You need to visit a reputable gun shop for this answer!
100-400 as described.