VCCA Home Forums Thread Like Summary - 38 Cabriolet buttons

The person doing the interior of my 38 Cabriolet says that in his research that there are six buttons on the front seat. He knows that there is the ribbing but insists there are six buttons. I have never seen a picture of a seat of an original 38 so I can't argue with him. This company does concours quality work and I don't want this car screwed up. Does anyone know for sure out there?

Dave I have reached out to the GM Heritage Archives and they don't have any information other than a couple of pictures of the outside. I'm going with Tiny on this one so I told Dan ,the upholsterer, that his research was right.
Thanks for the replies though. I can't wait to get this car done.