a good source is the gun broker in parts catagories gunbroker.com
50-500 usd
50-500 usd.
Provide a DETAILED description of ALL markings on the weapon.
You need to see a gunsmith.
Impossible to answer without a detailed description.
50-500 usd
100-500 or more depending on specifics
Rifles are not guages. is this and auto 5 shotgun?
10-1000 USD depending on specifics
Your serial number indicates that your 16 gauge browning auto-5 shotgun was made in the year 1929.
You will have to provide the serial number and the model in order for any one to date it. Alternatively, go to Browning's web site and look it up under Customer Service.
Value depends on condition and exact configuration. Value range from a few hundred to multiple thousands of USD.