_"Many Muskie anglers consider the Mud Puppy, invented by Mosinee, Wisconsin, resident Constance C. Roberts in 1920, one of the best muskie lures ever made. Roberts received Patent #1,698,735 in 1929 for his lure, which has three distinguishing features. First, it has a rotating tail (there were many rotary head baits on the market by the 1920s but almost none with revolving tails). Second, as you noted, the hooks were connected to a wire that pulled out of the lure's body. Third, it was hand carved and hand painted. There are many variations of the Mud Puppy; because of the painted eyes and smaller tail, yours could date anywhere from the 1940s to the 1960s and is valued at $30-$50 in the box. Older glass-eyed versions can be worth over $100. It is still being made today, a testament to its iconic status. Click here for a picture of four different versions of the Mud Puppy."