I believe youre talking about Tamariz's Total Coincidence (aka Triple Coincidence) which can be found in his book Sonata. Good luck finding the book though, it's out of print and pretty much unavailable anywhere.
Cheers,
Lucas
EDIT: Scratch that, I just read you're talking about an Aldo Columbini trick... at which point I assume you're talking about Jumbo Coincidence which is available in quite a few places. Just google it.