Dual CF card slots for upgrading a FF SLR.
But it also looks exactly like the second and third floor windows of the new Museo Fotografico in Barcelona. Seen from street level.
base for an exotic knife sharpener
I seem to be the only one playing and I give up !!!
Some sort of strap attachment points?
Maybe there would be more interest if the objects were everyday things we had to guess about rather than obscure things which many people wouldn't even know about. How can you guess something which you have never heard of.