What is age and value of a pre-war 16 gauge Browning Auto-5 converted from 2 9-16 to 2 3-4 serial 982xx with a fully-engraved receiver?

It is a 1934 gun. Would need to know what you mean by 'fully-engraved.' There was some light scroll work standard on field guns. If you can send pictures it would be helpful. sales@countrygunsmith.net