Impossible to answer without a detailed description, type of action, caliber, etc..
Your Browning model safari bolt action rifle was made by FN of belguim for Browning in 1969,with the serial number that you provided.
It sounds to me that you have a Browning T-bolt rifle in 22cal that was made in the year 1969.But the serial number should read 69X then the serial number.
Your browning safari bolt action rifle was made by FN for browning in 1963.
You must call Browning with the serial number.
Go to Proofhouse.com and search the Browning serial number tables.
You must call Browning.
By the serial number.
The L70 suffix to the serial number identify,s the year of production of your Browning safari bolt action rifle as 1970.
Your browning safari bolt action rifle was made in 1970.
@87 yrs old
No way to answer with only the serial number and no other information like, caliber/gauge, action type, etc..
You will have to call Browning with the serial number.