Need a detailed description of finish, condition, box, papers, all features and markings.
By the serial number.
To determine the exact value of a Browning automatic 20 gauge shotgun made in Belgium, a couple factors would need to be taken into consideration. Some of these things are the age and condition of the shotgun.
Need the model to determine age.If you have a Browning auto-5 shotgun,then with the serial number that you supplied your shotgun was made by FN of Belguim for Browning in the year 1924.
No such thing as a 22 Shotgun.
Your question cannot be answered,without you providing a serial number(to determine the age)of your shotgun.
No such model number.
Japan, Portugal and Belgium
Your browning auto-5 shotgun was made by FN of belguim for browning in 1957.
Your Browning auto-5 shotgun with the prefix of 70s to the serial number identifies that your shotgun was made in Belgium for Browning in the year 1970.
Your sweet sixteen browning auto-5 shotgun was made by FN for browning in 1963.
If your browning 16ga shotgun is a auto-5 then it was made by FN of belguim for browning in 1927.
Entirely possible.