My Dad had one also, same color. Has MG/AH chassis parts. Later on I bought a '73 MG Midget and had fond memories of knocking out the link pins with Dad.
Herbert the monster lived in the trunk according to the old boy...LOL We were 4 and 5 then.
Saw one recently in about the same condition as yours.
Wouldn't mind another Midget either. It was fun.