Charlie, your Model 23 must be a fancier finished Pigeon Grade than mine.
My 20 ga. Pigeon Grade European model has the standard round knob pistol grip, very plain, dark, straight grain walnut with a oil finish. The splinter forearm has the push button tip release. There is no ebony wedge tip. It has the standard Vent Rib. The barrels are 28", 3" chambers and the chokes are IC/IM. It is my favorite pheasant gun.

Ole Cowboy