50-600 usd
Go to Browning's website under Support then go to Date your firearm. Value of any used firearm depends upon condition and area of sale.
Belgium
Check the serial number at proofhouse.com
50-400 USD
They will have "Made in Japan" on them somewhere. Value will depend on exact configuration and condition.
50-1000 usd
50- 500 usd
Impossible to answer without a detailed description.
Browning Citori 12 gage over and under & a Browning Goldtrigger Light Twelve: How much are they worth?
Check Browning's website under customer service, then date your firearm.
50-250 usd
100-10000 or more depending on specifics