Leica leather pattern?

Does anyone have a pattern, e.g. as a dxf file or similar, for the vulcanite covering on a Leica IIIc?

I know cameraleather.com can do prefab things, but I have access to cheap ostrich leg leather, so I'm more inclined to re-cover it myself.

I have found a much more reasonable quote for repair with Fotomechanik Reinhardt in Hannover, which has the added bonus of being just down the road for me right now.

I think there was a diamond pattern covering as well as a leather-look.