Chris Squire, while working in a UK music store, got his hands on one of the first Rickenbacker Rose Morris model 1999 basses - essentially a 1964 model 4001 without body binding and a simple dot fretboard. He eventually became the much-admired bassist for the prog rock group Yes, and modified his original 1999 bass along the way. Rickenbacker's tribute to this influential bassist was to create the 4001CS, of which 1000 units were issued, each in a Cream finish color with natural Vermillion headstock wings and a faux horseshoe pickup - a standard hi-gain bass pickup with non-magnetized metal horseshoe covers for cosmetic effect. The example here has been fitted with a plain white pickguard, as the pickguards issued with this model were unusually thin plexi and prone to cracking. With original hard shell case and COA.