The Model 23 Series was introduced in 1978. This shotgun has solid matted rib, twin beads, boxlock, single gold trigger, top tang safety, blued metal, deluxe oil finish checkered walnut pistol grip stock with grip cap, beaver tail forend, solid black rubber buttplate. Bottom of frame in gold says "Heavy Duck". The Heavy Duck Model was only manufactured in 1984 with a mere 500 made. This shotgun appears to be in as new condition inside and out. Comes in the Winchester canvas and leather carry case with paperwork. Serial Number-HD392E; Manufacturer-Winchester; Model-23HD; Barrel Length-30"; FFL Status-Modern; Gauge-12; Chamber-3"; Length of Pull-14 - 1/8"; Drop at Comp-1 - 1/2"; Drop at Heel-2 - 1/2"; Internal Bore Diameter-.729"; Barrel Wall Thickness-.035"; Choke-Full & Full;