A prototype of an iPod touch 4G

Seen on eBay again, a prototype of an iPod touch. This time, a 4th generation model.

It was offered at a rather high price (over $2,000) but it has two interesting points. First, the absence of marking on the back (which is becoming the norm on modern devices) but also, and more importantly, the fact that it runs on the test OS, SwitchBoard.

The back without markings