The value of a Beretta actually depends highly upon a number of factors. Some of those include age and condition.
Depends on what grade and the overall condition. Price range of 500-2500
Browning never made a Model 51 shotgun.
Can't answer about "Volunteer" question. Please tell which model. Volunteer is not a model by Browning
50-500 USD or so
What is the value of a 12 gauge Browning shotgun serial J68824?
Impossible to value without a detailed description of all features.
Impossible to answer without knowing which model.
Impossible to answer without knowing model.
Requires a professional appraisal
50-650 usd
10-1000 USD or more depending on specifics
Impossible to answer without knowing which model and its condition.
50- 700 usd