What does that symbol mean? It is the “Protologo”.
More pictures and a video below:
Note: This phone does not have screws at the bottom like the eventual iPhone 4 and 4S had, but most everything else looks familiar. More images and description on eBay.
Update: Contributor Sonny Dickson spent some time with the unit and made this video:
Update 2: The listing has been removed off Ebay.