"During the 1960's BMC and Rolls-Royce worked on a number of projects involving the possible joint venture of producing a small Rolls-Royce motorcar.
The only production car to come from this unusual partnership was the Princess 4 Litre R, launched in 1964, the "r" signifying the Rolls-Royce engine.

This large luxury saloon car incorporated a modified Farina, A110 bodyshell (with a unique tail design) and a R-R FB60, 3909cc six cylinder engine.
This particular engine was never used in any other passenger vehicle, however it was built to the usual high standard that could expected of a R-R engine.
The cars external and internal trim was similar to the earlier 3 Litre cars, the only Rolls-Royce badges appeared on the front wings and engine rocker cover.

Production of this unusual car lasted until 1968, 6,555 cars had been built in the four year production run."

http://www.motorbase.com/vehicle/by-id/412/


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