A few hundred to multiple thousands of USD depending on EXACTLY what you have and its condition, box, accessories, etc..
1943 browning light 12 belguim made $5K
The sn you list is for a 9mm
50-500 usd
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.
50-550 usd
50-500 usd
Your browning sweet sixteen was made for browning in 1922 by FN of belguim.
Made in 1959 http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
100-400 USD depending on condition.
100-700 USD
Your browning model BAR which was made in 1985 should say either made in belguim on the barrel,or made in belguim assembled in portugal on the barrel.
50-250 usd