You're looking at a vintage 1978 MXR Dyna Comp in very good condition! Works and sounds great. Gets you that squishy Dyna Comp sound that so many pedals try to emulate. The original foam padding has disintegrated and was recently replaced with newer foam padding to protect the circuit board. I bought this in '78 or early '79, used it for maybe a year at most and it's been sitting in my dresser drawer ever since.