To the best of my knowledge, there is not Model 83050. Determining value invloves many different pieces of information. Condition is usually the most important. The type of finish, features, wood used in the stock, what caliber/gauge is on the barrel, barrel length, accessories, any engraving, presence of origianal paper work and box also come into play.
depends on the model
100 USD.
200-2000
Impossible to value with only the serial number.
Impossible to answer without a detalied description of all markings and features.
1 dollar.
Requires professional appraisal
300 or so
No such model made.
Browning did not make an Invector model. That is the type choke system of the shotgun.
No way to value with just the serial number.
Depending on the condition, between $525-$600