It shouldn't be allowed that these things become offered as "Euros" or even essais because this gives them an official touch even if the seller states that this is no legal tender coin.

The similarity with the original is probably just to make money with those collectors who cannot effort the original or to betray people who didn't check the difference.
Here's another strange piece of fa(ke)ntasy: "2 Euro Vatican Treaty Of Rome" - of course offered in the category of official Vatican-coins after Euro-introduction

I'm really wondering why these offers did not become deleted, I thought the word "Euro" is protected somehow.