You will have better luck on other boards.
500 USD
Whatever someone will pay for it.
It will be marked if it is Belgian made.
1929, if that is the complete serial number. Any ventilated rib would not be original, but a solid rib would be. If all is right with the gun, up to $800.
12 gauge Belgian Browning shotgun, serial #296305
1934
What model?
1951.
1967
Need more info / what is the serial number
Yes
your browning auto-5 shotgun was made in 1947.