Thanks to everyone who has replied to my query. I've just had a discussion with my painter and we've agreed on the panel shape and size, and the width of the gold lines, which he will apply.
While not claiming our interpretation as definitive, I feel that having asked the question I ought to share the decision with Forum members. I attach a Word document which, when printed at 100%, shows the shape and size of the panel. It will be noted that the panel tapers slightly from front to rear and the top rear 'point' projects further than the bottom one. It also indicates that the gold lining should be 4mm wide.
I hope that this opinion will be a useful starting point for other restorers of A Rapides facing a similar decision in the future!
While not claiming our interpretation as definitive, I feel that having asked the question I ought to share the decision with Forum members. I attach a Word document which, when printed at 100%, shows the shape and size of the panel. It will be noted that the panel tapers slightly from front to rear and the top rear 'point' projects further than the bottom one. It also indicates that the gold lining should be 4mm wide.
I hope that this opinion will be a useful starting point for other restorers of A Rapides facing a similar decision in the future!