Hi robnorth
I was on Clives mauling (sorry mailing) list having bought a few of his books, but never received anything like that.
Perhaps he knew I was hard up and could never afford them, as he once sent me a letter one Saturday, advising a horse available at 40/1 with Bill Hill. It was only 20/1 at my local Laddys so I took SP. It won at 25/1.
Maybe the idea was that I should put £50 on, then buy the Trident and Quattro systems out of the winnings.
Wasn’t the Quattro made by Audi and the Trident the first airliner with engines at the rear? (three of them hence the name.)