As with any firearm, it is not possible to accurately appraise a gun without seeing it. Condition, and original configuration will determine value. Other factors such as rarity of caliber or guage and higher grades have significant impact on value. Recommend that you see a local gun dealer for an appraisal. You can also do your own investigation by looking at other models being sold that are in the same condition as yours. Try the gunbroker.com or a periodical called "The Gun List" You can also reference the Blue Book of Gun Values which can be purchased on line at various retailers. The serial number is located under the lever that breaks open the gun.
The only Browning Model 725 I am aware of is a knife.
100-400 USD depending on condition.
The serial number prefix of 0S indicates that your Browning sweet sixteen shotgun was made by FN of Belguim for Browning in the year 1960.All Browning shotguns made prior to the 1976 were Belguim made shotguns.So to answer your question,yes you have a Belguim Browning.
50-250 usd
$350-$600.
A few hundred to multiple thousands of USD depending on EXACTLY what you have and its condition, accessories, box, papers.
A few hundred to multiple thousands of USD depending on EXACTLY what you have and its condition, box, accessories, etc..
Your browning auto-5 shotgun was made by FN of belguim for browning in 1938.In the condition that you describe your shotgun should be worth between 450-550 dollars.
You will have to call Browning with the sn to find out
Your browning sweet sixteen was made for browning in 1922 by FN of belguim.
Your browning hi-power was made by FN of belguim for browning in 1969.
Your browning sweet sixteen was made by FN of belguim for browning in 1951.