Having seen a few similarly-described routines lately (some of which are very good), I thought I'd give this one a try. For the $28 asking price I was disappointed. This would be alright as an effect in a book alongside other effects, or as one effect on a multi-trick DVD but the method limits you to exactly the same two questions each time, and there is no way to create any variations and have it work still. This leaves you with, at best, a one-phase trick or one that has to be repeated verbatim each time which limits the chance to make it a more rounded routine.

This guy here is teaching your product without your permission for free in the youtube video below... check him out.
I don't know if you'll understand cause the video it's in the portuguese language.

He is a guy from brazil and claims to be a mentalist and he teaches your tequila in his private course


https://www.youtube.com/watch?v=1789Kq-EyPY

Like people say, the ''which hand is the coin'' trick never earned anyone a medal.
I bought this book because I'm obsessed with the idea of doing that propless. But I bought it mostly for myself, in the sense that succesfully doing this isn't the kind of thing that kills people and leaves them speechless or hysterical.

That being said,
I thought I was diving into body language or something like that, but it's not! And I was surprised and pleased to discover there could be a 100% rate logic to that. Mark also indicates numerous sources from which he developped the effect, so, you can actually learn more about it afterwards if you want more.

But,
30$ for about 30 pages. And 30$ for one effect of ''Which hand is the coin'' is, let's say it, EXPENSIVE...
Because you don't want to do it more than once to your spectator, simply because it falls into being boring, honestly.
There's only one method explained.
But, if you do the effect for 4 or 5 people at once, all of them having a coin in their hands, now it starts being a little bit more impressive for the audience.

Also, great additions and variations to Mark's take by McLeod, Murray and Turner thought.

Book also includes ideas with other objects.
Or revealing the date on the coin at the end but this one IMO cannot fit all situations.