When spring returns, mallard ducks are a common sight on the water. In any season, you can find them in duck decoy collections and auctions. This mallard drake decoy sold at Guyette & Deeter, Inc., specialists in sporting collectibles, for $1,125. It was made by the Mason Decoy Factory of Detroit, which operated from 1896 to 1924 and is still celebrated by decoy collectors today.Foun...