200-500 usd
No sn means no way to estimate age. 50-250 USD
Need the serial number to determine age. Probably a vague ballpark is 300-$600 in value
There is no way to age your browning auto-5 shotgun without a serial number.As to the value,this would be 450 dollars for a shotgun in the condition that you describe.I can say that the Browning auto-5 standard weight shotgun in 16gauge was made from 1946-1964.
With the serial number that you have provided,your Browning auto-5 standard weight shotgun was made in Belgium in the year 1950.the value will be between 325-400 dollars for a shotgun in the condition that you have described.
500 USD or so
Your browning auto-5 standard weight 16ga shotgun was made for browning by FN of belguim in 1927.A fine browning auto-5 with this age and in 80-90% finish will bring between in the neighborhood of 600-700 dollars.You can add a little more if you have a solid rib,or vent-rib barrel with the shotgun.
Your Belgium made Browning standard weight 16 gauge shotgun,which was made in 1955 will bring between 325-375 dollars in the condition that you describe.If it has a vent rib barrel then add 50-75 dollars to the above listed prices.
A Browning auto-5 standard weight in 80% condition will bring between 325-475 dollars depending on which type of barrel the shotgun has.plain barrel(325 dollars)matted rib solid(375 dollars)and vent rib(475 dollars).
100-1000 USD or more depending on specifics.
You must call Browning.
100-599 USD or so
Without a detailed description of all markings and features; 100-1000 USD