http://www.browning.com/customerservice/qna/detail.asp?ID=100
The word Citori is the name of the model of Browning you have.
You are furnishing an incomplete serial number. Citori is a model of Browning.
The Invector Choke system was first introduced in 1983 and only available on Citori, BPS, and BT-99 models. Fixed choke barrels were still available as well. Please note that the Citori Lightning model wasn't introduced until 1988. All Citori Lightning models in 12, 16, and 20ga. were only available with the invector choke system (and still are). 28ga Lightning Citori's were still fixed choke only.
You will have to call Browning. That model number is not published.
500-5000 USD depending on specifics.
You will have to call Browning to find out.
Compare to known models
A citori 325
You will have to call Browning to find out. Beyond publishe data.
This is a 12ga made in 1973. It is the first year of production for the Citori Model.
1988
100-1000 USD or so