BRABHAM BT56 1987 Turbo F1 CAR original plan blueprint for suspension rocker

Large plan blueprint of the 1987 Formula One Brabham BT56 BMW Turbo rear suspension rocker March 2 1986.

"Motor Racing Developments" was the actual name of the Brabham team , which only became known as Brabham when someone pointed out the initialls MRD sounded like a rude word in France!
The item is folded several times and opens up to 33x23.5 inches in size on standard paper of the era As you can see from the photos it's in excellent original condition