I was asked by a good friend to sell her father's firearms - one of which is a Browning Citori 20 gauge shotgun. I am not a shotgun person so am trying to determine a reasonable value. So, Browning Citori 20 gauge, 2 3/4 inch, modified and improved fixed choke, 26" barrels, Serial Number 16408PY***, straight grip, schnable forearm, factory engraving on receiver, blued with nice wood, plastic Browning butt plate, excellent condition, nice and tight. Any help on general age and reasonable price would be appreciated.