Although both are interchangeable, a true Sweet 16 barrel will have three holes drilled through the barrel band. This was one of the ways Browning lightened the barrel. The rib will also be a smidge thinner than on a regular barrel.
Check the barrel and receiver.
200-500 USD
left side of barrel usually
Can't be answered without a detailed description of all markings, finish, barrel length, condition, accessories, box, papers, etc..
No way to answer without a sn, condition and bbl length.
Call Browning.
What is the question?
While the original length is not indicated on the barrel, the barrel weight is. Example: 1Kg012 which would mean 1012 grams. An accurate scale would help you identify. If the barrel weighs less than the stamped number then the barrel has been altered.
your sweet 16 was made in 1948
Please use the following link http://wiki.answers.com/Q/What_is_the_value_of_a_Browning_Sweet_Sixteen
No