[4] In early 1951, Joseph Bell (JB) Ferguson approached Panhard with a proposal to build a small sports car for the American market.

[7] Panhard originally planned to build just 500 Dyna Juniors but decided to increase production in response to demand.

The car debuted at the Paris Motor Show in October 1951 and sales officially started at the beginning of the following year.

There was likewise no external trunk lid, with the rear storage compartment accessed by folding down the backrest of the two-place bench-seat.

The interior was spartan, with a single centre-mounted dial for the speedometer and a gearshift lever sprouting from the dashboard as in the Dyna X.

[3] The front suspension was independent with upper and lower transverse leaf springs, while the rear was a rigid trailing axle with a central pivot and torsion bars.

The Dyna Junior was powered by the air-cooled two-cylinder OHV boxer engine designed by Louis Delagarde.

The earliest cars used the 745 cc (45.5 cu in) GM750 SS3 engine that produced 24.3 kW (32.6 hp) at 5,000 rpm giving a maximum speed of 120 km/h (74.6 mph).

In April 1952 the larger 851 cc (51.9 cu in) GM850 38 CV engine making 27.9 kW (37.4 hp) became available, raising top speed to 125 km/h (77.7 mph).