Without a detailed description of all markings, features, box, papers, accessories, condition, etc.. 100-1000 USD. You did not provide the sn. You will need to contact Browning.
1952.
Made in 1959 http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
In order to give you a accurate value please include the serial number to date your sweet sixteen shotgun along with the overall condition,and what type of barrel that your shotgun has (plain barrel,solid matte rib.or vent rib barrel).
50-500 usd
50-500 uSD
Made in 1953, please see the link below.
50-500 usd
100-700 usd
50-500 usd
Requires professional appraisal.
use the following link http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
20-400 USD