That leaves us number one, (part No. 10086) but I don't have one on the loose, the i/d. must be 11,15mm. and o/d. 3/4" but the length I cannot measure, maybe Ron? this spacer goes between the right hand frame fork and the (longer?) end of the bearing.
But looking at the axle diagram from 2 pages back, there is another spacer on the outside of the r/h. frame fork?? (part No. 37-8-H4) but this could be a prewar thing? No, just looked at the factory picture, and we need one of these on our bikes, so who has one?? i/d. will again be 11,15mm. o/d. will be 7/8" but what about the rest, it could be the same as a frame to engine spacer?, can someone look up the numbers? the part No. for this part on the axle is 36-8-H16.
Cheers,
Lex