Depends upon what model 20 gauge it is. Look under the tang on breakdown type guns. On automatics is is on the receiver somewhere.
No serial number provided.
You will have to call Browning or provide the serial number.
What is the value of a 12 gauge Browning shotgun serial J68824?
A Browning auto-5 shotgun in 12 gauge with the serial number provided,indicates that it was made by FN of Belguim for Browning in 1905.
A browning auto-5 shotgun with the serial number you provided,was made by FN of belguim for browning in 1914.
The number X1850 indicates the serial number.This serial number shows that you have a browning auto-5 16 gauge shotgun that was made in the year 1947.
Check the receiver
With the serial number that you provided,your Browning auto-5 shotgun was produced in Belguim by FN for Browning in the year 1951.
Seeing that you did not state what gauge your shotgun is in,the Browning auto-5 shotgun chambered in 12 gauge with the serial number 49322 was made in 1921,if you have a 16 gauge model auto-5 shotgun then it was made in the year 1926.
You will need to provide a little more information.Please indicate what type of Browning shotgun that you have,and what gauge your shotgun is in.
If your browning auto-5 shotgun is a 12 gauge then it was made in 1927,if you have a 16 gauge shotgun it was made in 1934.
With the serial number that you supplied,your Browning 16ga auto-5 shotgun was made in the year 1948.