A set of iPhone prototypes from 2006 briefly made the eBay rounds this morning, with bids running more than $2,000 for the two phones (one non-working) before Apple managed to get the listing yanked sometime during the day [although we now have reports that a sale was completed before the listing went down -Ed.]. The seller also made a YouTube video documenting the features on the phone -- while that too was pulled down due to Apple exerting its copyright, Engadget managed to salvage it and now has it up on its site.
The prototype hints at several features that did not make it to the final version of the iPhone, including a possible option for video phone calls and games. The video is well worth watching. Even though the auction was pulled, we still manage to get a peek at the process that led to the phone unveiled in early 2007. We also have a glimpse of the iPhone at its most basic levels, something that will be an asset to developers.
Update: A similar prototype is shown in this Flickr set as noted below.