Around 450-500 dollars depending on condition and options such as engraving it could be more or less.
Browning did not make an Invector model. That is the type choke system of the shotgun.
Need a detailed description
No way to date without the sn. No way to value without a detailed description of the overall condition, finish, accessories, etc..
Impossible to answer without a detailed description of the Browning you are referring to.
No such weapon made by Browning.
is about 100.00
Impossible to answer without a detalied description of all markings and features.
500-600 USD
10-1000 USD depending on specifics.
500-600 USD
50-300 usd
about four thousand dollars