Browning's web site has what you are looking for.
Browning has made centerfire lever action rifles in various calibers over the decades.
Belgium
Browning BLR is chambered in 30.06 and many other calibers.
Your Browning safari model bolt action rifle was made by FN of Belguim for Browning in the Year 1963.
50-1000 usd
Your Browning model safari bolt action rifle was made by FN of belguim for Browning in 1969,with the serial number that you provided.
Sometimes by the complete sn, sometimes by the action and features.
Your browning safari bolt action rifle was made in 1970.
The prefix of L70 indicates that your Browning safari bolt action rifle was made in the year 1970.
For a specific answer, please provide the model number. Most guns stopped production in Belgium in the 1970.
Need a detailed description of all markings and type of action.
100-700 usd