theory11 — Magic Tricks & the World's Finest Playing Cards
IIRC Cyril performed like a 2 of clubs to a three of clubs, in which case he probably made his own gimmick...Not a coincidence so much as a contrivance.
Most magicians don't market effects until they've been working with them for a while. Cyril more than likely called in Wayne as one of his consultants for one or more of his TV specials.