Mid 60s to early 70s
The L-61 R Action was produced by FN/Herstal for SAKO, prior to 1972. Value will depend upon actual rifle model and condition as well as cartridge chambering.
Late 60s to early 70s
ABOUT 1974
No published sn data
Sako L61R ser num: 1 to 90954 Manufacturing date between January 31st, 1962 and September 12th, 1973
No known published sn data in the US
Late 60's to early 70's
Impossible to answer without a detailed description of all markings and the sn.
See link below for year of introduction of Sako models:
60s
80's or so
early 60s or so
Impossible to answer without a detailed description of all features