Simmons didn't install the ribs at first during this period. (I didn't say they did). Winchester did but under license from Simmons who not only made them but designed them. The round post donut base and the round post vented rib was also a Simmons design but were installed by Winchester. Winchester even had Simmons train their employees to make them around 1954. This kept the name SIMMONS off of the rib. This made the ribs Winchester's and not Simmons from their point of view. Nobody cared about the Model 42 and what it had on it. The Model 12 was their baby and they didn't want the Simmons name tacked on it. And people around here don't want Simmons splashed on the ribs. Why spend thousands of dollars on one when you can get one without the name for the same money? Most people treat them like salt guns as soon as they see the name Simmons. Some buy them, some don't. The bottom line is, most people don't want SIMMONS stamped down the rib of a Winchester.