Mac Rumors is reporting that a prototype MacBook Air from mid-2007 has been sold on eBay for $730. The MacBook Air which according to AppleInsider was sold by a California Apple Reseller was listed on the auction site as an “as is” MacBook Air. But when the machine arrived at its destination it certainly was not what the purchaser was expecting.

According to the Mac Rumors forum member the listing for the MacBook Air cautioned buyers stating that the system had a malfunctioning hinge and minor blemishes on the outer shell. But the listing did not allude to its pre-production status.

The MacBook Air differs from models that shipped in early-2008 as it only features a 60GB hard drive with Mac OS X Tiger pre-installed and more prominently the lower enclosure is made from black plastic.

The serial number of the machine would indicate that it was manufactured in May 2007 a full seven months before Apple even announced the MacBook Air.