RGS Atalanta MG

Taking part in the Classic Car Invitation Race at the Autumn Historic Car Races organised by the Aston Martin Owners Club in September 1992 was the car pictured below.

According to the programme of the event it's a 1956 RGS MG, but this H&H auction site in 2008 said that it was a 1957 car. The H&H site gives some history of the car.