1. I have a couple of bare 380mm hard rubber steering wheels with the part number 914.347.804.10. They are virtually identical to the .803 wheels used for double-wrapping back in the day. I can sell for £250 each.
2. I have 400mm 911 steering wheel with restitched original leather. The part number ends in .20. I believe that means the rim is slightly thicker than the usual .10 ending. The hub is also overstamped with other numbers and letters (see the pic below), which - I believe - is often the case on the .20 wheels. I can sell the wheel for £350 and would be delighted to hear from anyone who knows more about the part number and overstamping.
Many thanks, Robert