Great grouse guns don’t have to cost a fortune. In the case of the Beretta you see here, they definitely don’t. This BL-4 is lightweight, reliable, and practically new. And I bet it sell at a very reasonable price.
I think Beretta introduced their BL boxlock O/Us in the 1960s. They came in grades from the BL-1 to the BL-5, and today guy’s like them because they handle like doubles costing many, many times more. This one is coming up as part of Little John’s Auction Services Fall Sale, Session IV, on Monday, 11/18/13/.

Beretta Model BL-4 O/U shotgun, 20 gauge, 28″ barrels: Auto ejectors, 3” chambers, 28” ventilated rib barrels, F over M choked, blue finish, checkered wood stocks, black plastic butt plate, single gold trigger, length of pull is 14-3/8”, #X10511. This gun is in overall excellent condition showing little use or handling; fine bores, crisp action, beautiful wood stocks, 99%+ original finish. Est: $600-$1,200.