I've done some digging and found bow drill for Mercedes at GER German Canvas Convertible Top Material
The beige variant is also for sale at Woolies in England:
Woolies Trim - Dobby Lining
- but they don't seem to sell it in black unless it is already attached to mohair hood material:
Woolies Trim - Mohair
I'll ask Woolies if they can supply the 'dobby lining' in black but if I can find a black cloth/wool fabric with a pattern a little closer to the original through a dressmaker or upholsterer I'll give that a go.
I wasn't aware that a felt type material was fitted to the area where the top is stowed - my car has very utilitarian grey carpet glued into that area - clearly not original but already glued in place when I acquired the car.
Can anyone also shed light on the rubber? strip that sits in the front of the soft top and which butts against the windscreen top rail when the top is closed (part number 106.01.62.236.00)? I can't see that on the Cicognani page:
Cicognani S.r.l - Guarnizioni per auto d'epoca - 2000 - 2600 Spider (1958-66)
(there is a hardtop head weatherstrip seal but it's a different part number from the soft top in the parts book. They look bodged with some kind of semi-solid black gunge on both of the tops I have. Woolies in the UK sells a rubber extrusion that looks as if it should do the job (Woolies Trim - Rubber Extrusion
) - and perhaps the job of the rubber strip that is sewn to the top below the side flaps (106.01.53.072/00/02).