1974 Dan Armstrong Model 341 "London Woody". What is notable is the single movable pickup. Still hasn't taken off altho it's a great innovation! The cast aluminium bridge is connected to an aluminum ramp that runs from the front of the bridge - to the end of the neck/fingerboard. The pickup is able glide along on this ramp and be positioned anywhere between the end of the neck and the beginning of the bridge. The ramp & sliding pickup were both designed by Kent Armstrong.