The browning twelvette was made during the years 1957-1971.
The browning twelvette with the serial number you provided was made in 1963.
The sn you list is for a 9mm
Shotgun made by Browning.
50-500 usd
You will have to call Browning to find out.
50-550 usd
50-500 usd
1943 browning light 12 belguim made $5K
Made in 1959 http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
I can't answer because you did not provide the serial number.
100-400 USD depending on condition.