I've shared pics of my 1974 'Mexico' Mk 1 before. I bought it in 1980 (second owner) as a parts-runner. It was 50,000 and purple velvet. It got crunched in the side so got it back from the insurers and rebuilt it using new Mexico wings and complete running gear plus new wheels. Used it until 1993 (up to about 110k on the clock) and then after a few years in store sold it for £400. Would be worth a bit more now. It had been Ziebartted from new so very solid, original arches etc.