I don't know how long you want to go back, but Browning has made their Citori model in 410, 28, 20, 16, and 12 gauges for more than thirty years.
Yes, in many different grades and variations. go to browning.com to see the current production lineup.
Condition, model, gauge, and grade is required to make an ballpark quote for this gun. Generally Browning Superposed Guns range anywhere from $1200 to over $3000 for a standard grade I. Recommend having a gun shop appraise this for you.
No, never
No
Yes
What is the question. Yes they do make them
You will have to call Browning to find out.
12 gauge only.
To the best of my recelection the answer is no.
Possible, but, not likely.
They never did. 14 ga was never made in any model by Browning
They made and make them still. They are valued anywhere from $500 to 10,000 possibly more, many variations in grade, condition, fixed barrel or choke tubes...etc