Never thought of Jongbloed wheels?? I know they made 'One off' wheels. Back in the 80's they made a set of wheels for Gordon Chance's one-off Ferrari 328 (GTP) turbo car. When we were getting it ready for sale he told me, they wanted to try something totally different, so this is the wheels they came up with, 3-piece. Hope the picture are right side up
I tried uploading more pictures but not able too.