100-1000 USD depending on condtion and EXACT configuration, papers, box, accessories.
BT99
Browning doesnt show the BT99 as a 299 model code. They list the BT99 as a model 149. Below is the link to the Browning codes.
Please add the serial, but it is likely a single barrel trap gun such as the BT99
100-1000 usd
If you go to browning,s home page there is a way to age your shotgun there.
100-1000 USD
50-650 usd
Japan
A shotgun designed to shoo trap with.
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.
You have not provided the entire sn. Call Browning for help
1988