Check under and on the inside of the forearm, top of the action, receiver, and barrel.
100-500 uSd
50-500 usd
70-700 usd
50-600 uSD
Are we talking about a auto-5 shotgun,or a BPS(browning pump shotgun),or a over-under shotgun(citori, or superposed)These answers would help me determine the value of your shotgun which was made in 1980.
How much is a Browning Sweet 16 gold trigger shotgun worth?
50-500 usd
What_is_the_value_of_a_Browning_Sweet_Sixteen
55-550 usd
100-400 usd
100-10000 USD depending on exactly what you have, condition, etc..
Based on description 100-500