Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Auto 5's with poly-chokes, compensators and recoil pads (other than Mag 12's) will reduce value. Near mint guns and original box will command an extra premium. Recommend taking it to a gun shop for appraisal.
No such model name in the Browning line.
10-20 usd
1000 USD
About 20 grand....if your lucky
50-575 usd
20-200 usd
Browning did not manufacture the gun. The gun was made by Stevens, using a Browning patent. Value is minimal, below $200.
your browning auto-5 lightweight 20 ga was made in 1963.As to value they are going between 450-650 dollars depending on condition.
100-1000 USD
50-500 usd
50-500 usd
500 uSD