I've just found an load of tuning stuff a friends dad gave me ages ago: there is a yellow Speedwell fold out flier as well as the photostat special tuning cataloge for the 1275GT and Cooper S (C-AKD 5096) and 2 price lists
BUT! it came in the original BL envelope, postmarked Abingdon, 30th March '73 with the part number lable visible under the address lable.
They are going on Ebay, but I have a quandry. should I sell the envelope on seperately?????

I feel a tounge in cheek listing coming on.............