Hello.. I recently purchased my vintage 1972 Continental Mark IV, and upon researching the signatures on the hood, I discovered that the signature belongs to your grandfather. Your grandfather‘s work is on nearly every body panel of my car, the hood, trunk, fenders and wheel wells. I’m sorry for your loss, but very happy my car was touched by such an artist and is part of a larger history. I’ve several posts about it on my insta / meanmustardmarkiv