See link below for year of introduction of Sako models:
ABOUT 1974
No published sn data
60s
80's or so
Late 60s to early 70s
early 60s or so
No known published sn data in the US
Impossible to answer without the sn.
early 60s or so
Impossible to answer without a detailed description of all features
Sako L61R ser num: 1 to 90954 Manufacturing date between January 31st, 1962 and September 12th, 1973
To determine the age of a Sako L691 with the serial number 899531, you would typically need to consult Sako's records or a firearms reference guide, as the company may have specific production years for different serial number ranges. Generally, the Sako L691 was produced between the late 1980s and early 1990s. If you have access to a database or resource specific to Sako firearms, it can provide precise information regarding the manufacturing date of that particular serial number.