Philips Philicorda GM-751 Transportable Combo Organ 60's Vintage Rare GM751/00 this good sounding tube Philicorda is still in very good condition. It does have two slightly creaking knobs, do work. Everything on this GM751 works well and properly, surprisingly good sound. Philips Philicorda GM751 tube organ. The GM-751 was built in 1966 by Philips/Netherlands and was the first of the popular Philicorda series. It has a built-in amp and two warm speakers, a fantastic mechanical Spring-Reverb and controllable Vibrato. VOX and Farfisa organs may be the most known of the “squeaky” pop organs of the 60ties, but the Philicorda GM-751 is probably the coolest.