The price is dependant upon condition, model, wood.... The cheapest I've seen one lately that was in fair condition was 475.00. The price ranges on up into the thousands, to tens of thousands with custom work.
Japan
100-1000 usd
100-1000 USD
50-650 usd
BT99
100-1000 USD depending on condtion and EXACT configuration, papers, box, accessories.
Value depends on the features of the gun, and the condition. Please see the link and look up your trap gun for a general idea of value.
1988
1971
2003
You must call Browning as the sn you gave does not follow normal convention.
If you go to browning,s home page there is a way to age your shotgun there.