Need model and serial number to begin with. Area of point of sale is a driver. Look on sites like Gun Broker to see what others are selling for.
500 USD
There were several different Browning models used as DU guns. Auto-5, A500, B-80, etc... Need to know exactly which model, and whether the supporting Ducks Unlimited paperwork is still with the gun, and so forth.
Which Limited Edition do you have? More information is required. Provide serial number if possible
500 USD or so
500-775 usd
Don't fire it. It's worth $1700-$1900 unfired 100%. If you fire it, it's worth $800-1200.
There shouldn't have been a limited edition made in 1968. Not sure why it is described that way. For more information about value, check the link below.
Not having the box hurts, since you really cant call it new without it. Still $1000-$1400.
You need to call Browning.
It depends on the model
115db or so
No, it should not be fired in older Belgian Brownings.