Although intended to be built in France, design, development and prototype building was entrusted to Chris Lawrence at C.J. Lawrence Consultants of Hammersmith, London, England. The 4-door, 4-seat saloon featured a De Dion rear suspension. Final styling and trimming was by David Coward, -ex James Young (coachbuilders) and Motor magazine.
The earliest prototype Monicas were powered by a Ted Martin designed 3.4l V8 engine but later prototypes and the production model were equipped with a Chrysler 5.6 l (340 in³) V8 engine.
The car was presented at the Salon de Paris 1972 and production began in 1973 at a facility located in Balbigny, Loire. Only 8 production cars (as well as 22 prototypes) were completed before the factory closed in 1974, a victim of the 1973 oil crisis.
A plan by Panther Westwinds to resume production in England was not completed.