Recommend you ask at a local gun shop for assistance. Depending on which model you have, it can be easy or a little complicated.
12 gauge Belgian Browning shotgun, serial #296305
The barrel will be marked "Made in Belgium"
Yes
your browning auto-5 shotgun was made in 1947.
Your browning auto-5 shotgun was produced in 1931.
your browning 16ga auto-5 shotgun was made in 1949.
50-550 uSD
To many variations over the past 100 yrs to answer.
90-550 usd
Your browning auto-5 12ga lightweight shotgun was made by FN for browning in 1967.
If you have a Browning auto-5 shotgun in 12 gauge then it was made in 1927.If you have one in 16 gauge then it was made in the year 1931.
Browning's web site has a sn search function.