I also have the same pedal. I got my first "real" drum set (used) in 1989 and it came with the double pedal with triple towers and the second beater with all the bends. I could never get the left side to feel great and ended up removing the primary pedal to use as a single. It's a turbo (assuming they called it that at the time) and I used it almost exclusively for almost 20 years. I think I lost some parts along the way for the double pedal which is disappointing. My best guess is 83-88 with the silver base plate. Not sure the first year of the red plate but my brother's 1993 pedal is red with the old style silver hinge and radius rods.