Winchester Model 12 Heavy Duck, 12 ga. slide action shotgun.   Serial #1687438, mfg. 1958.  Good condition.  30” barrel has shiny, clean bore, 60% blue with some light marks and surface corrosion.  3” magnum chamber, choked FULL.   Receive rand trigger guard have 60% original finish with some light surface corrosion and edge wear.  Stock and forearm have 75% finish, Winchester solid rubber recoil pad.  Correct shorter LOP for use with heavy clothes.  Slide action works fine.  An authentic and correct Heavy Duck gun!   C&R OK.