[eystein]

For most wood parts in the body, there was a multiple choice of which type of wood to use. I guess that this was in order to avoid production halts / supply chain problems due to unavailability of a specific type of wood. The exception was parts were specific characteristics were required like for instance top bows to be steam bent.

Attached is part of a factory drawing for a sill for the Cabriolet (also made by Briggs who made the Fordor which shared many similar wood parts with the Cabriolet)

As you can see, a variety of woods were allowed under the specification.