I have seen this puzzle many times over the years but have never added it to my cart. When Hendrik came over for the toys fair (www.puzzle-shop.de) I asked him to add it to his bag.
It's a simple little 3 piece puzzle that takes a few minutes to put together and a few more to take apart. As you can see, there are 2 metal rings and a marble in this one. The object is simply to put the marble into the middles hole in between the rings.
I'll admit to being stumped for a while. Metal just shouldn't work the way this puzzle works. Without giving too much away, it defies all the properties that should be involved. I brought this along for a testing puzzle, and dropped the marble half a dozen times before I realized what I had to do. The solution out one of those "I can't believe that works" kind of grins on my face.
I think this will be a great puzzle to give to novice puzzlers or kids to try and solve. It might stump them for a minute or two, but I'll guarantee they will have the same silly grin I had once they solve it. Good entertainment value for the 10€ cost.