Info available on Browning's site.
I dont think there is such a thing...
1991
The Most recent sale has been $1195.00 for a 1995 Ducks Unlimited Model 12 in 28 gauge.
2000 or so
A semi-automatic shotgun made in 410, 28, 20 and 12 gauge.
50-500 uSD
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.
Only Browning knows and I don't think they will share that information. 25 Dec 08: According to page 482 of Ned Schwing's book "The Browning Superposed," there were 3,575 of the 28 gauge Superposeds made between 1959 and 1977, however the last 10 were special ordered in 1984.
100-10000 USD depending on specifics.
50-600 usd
100- multiple thousands depending on specifics.