My co-worker Amelia Z. gave me this chocolate tablet, part of a box that her father picked up in Europe.
This was delicious! It was tall vertical slab of chocolate, hollow and filled with chocolate mousse. I really liked it, and I was amused that the company was named Merci but was located in Germany.
Update on July 1, 2014: I got the box that these chocolates came in!
I thought this would be useful if anyone tries to track down these chocolates.