Three Rolls Royce Silver Cloud Drop-head Coupe factory blueprints

Rolls Royce Silver Cloud Drop-head Coupe H.J. Mulliner factory blueprints, set of three sheets present basic 3/4 views, with top up and top down, and detailed layout views for seating arrangements, dated July 1955 to June 1957, 19" x 14" ea., A- cond., (foxing , handling wear), lot of 3.