Original signed felt tip engineering concept sketch of the DeLorean's gull wing door closure system, accomplished by John DeLorean on a lined white 8 x 8.5 sheet, identifying the sketch as "Door—Lower edge." The drawing is annotated in ballpoint by DeLorean, "Extra structure for side impact protection," and "Double sealed—needs work." Matted and framed to an overall size of 14 x 16. In fine condition. Accompanied by a full letter of authenticity from JSA.
