Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Recommend taking it to a gun shop for appraisal.
on the bottom of the receiver
What model of browning shotgun are we talking about? I would need to know this in order to help you answer this question.
50-500 usd
No such model number.
Your browning model auto-5 shotgun in 16ga.was made by FN of belguim for browning in 1951.That makes your shotgun 60 years old.
If your auto-5 Browning shotgun is chambered in 12 gauge,then it was made in the year 1924.If you happen to have a 16 gauge model auto-5 shotgun,then it was made in the year 1928.
500 USD
Made in 1927.
Browning never made a Model 51 shotgun.
This is the same as a Superposed model shotgun. Introduced in 1931, Browning still makes these in Belgium.
If you have a 12 gauge model auto-5 Browning shotgun?Then it was produced by FN of Belguim for Browning in 1923.If you have the same shotgun in 16 gauge,then it was produced in 1928.
If your over under shotgun was made prior to 1964,then the model of your Browning shotgun should be named the superposed.