Windovers Ltd. in their company records listet the job to produce a limousine for this Rolls-Royce Phantom I with Job No. 7020. The task was finished in May 1926 and the Body-No. 5283 attached. Numbers in the 5000‘s indicate the body was made at Windovers‘ factory in Colindale near London. The company looked back to a founding date in 1796 when work on horse-drawn vehicles had started and then premises in Huntingdon had been set up. Coachbuilding for motor cars commenced at Huntingdon, though body numbers were listed in the 2000‘s.

The Rolls-Royce Phantom I had made ist debut as successor to the legendary Rolls-Royce Silver Ghost about a year ago, in 1925, and the model’s designation war Rolls-Royce New Phantom. Not before the later introduction of the Rolls-Royce Phantom II the company decided to re-christen the New Phantom as Rolls-Royce Phantom I. The major improvement of the new model in comparison to the aged Rolls-Royce Silver Ghost was a more powerful engine of 7,668 cc capacity, which provided some 120 hp. The six cylinder engine like that of ist predecessor still showed two separate cylinder blocks with three cylinders each, but now push-rod operated valves were located in a one-piece detachable cylinder head. The chassis though didn’t differ significantly from that of the previous model, not at least documented by the fact, that the Rolls-Royce factory fitted Phantom engines into several Silver Ghost chassis and re-numbered these as Rolls-Royce Phantom I (UMC-series).