Can't answer without more details. I.E., barrel length, all markings, overall condition, engraving (if any), etc..
You will need to call Browning.
Your browning 16ga shotgun was made by FN of belguim for browning in 1938.
If your browning 16ga shotgun is a auto-5 then it was made by FN of belguim for browning in 1927.
Your browning model auto-5 16 gauge shotgun was made by FN of belguim for browning in 1947 with the serial number you provided.
Its not a sweet 16. Sweets are a lightweight version of the 16ga. If there is no letter preceding this serial number, then you have an FN auto-5 and not a Browning Arms Co. gun. Your serial number indicates it was made in 1922, prior to the Browning Arms Co. guns. The FN stands for Fabrique Nationale which made the gun in Belgium. You barrel should say acier special. If it does, then it was made in 1922. Value is determined by condition, but at this age, normally FN guns go around 300-500 depending on the condition. Auto5man
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.
The value of a World War II Browning FN High Power pistol depends on its condition. They can be found for sale from $1,100 to $1,800.
You will have to call Browning with the serial number to find out.
Impossible to answer without a detailed description.
10-200 usd
100-1000 USD and up depending on specifics.
25-250 usd