Despite there being only a handful of Apple I computers still in working order, they do seem to come up for sale with surprising frequency. The latest one, due to be auctioned next month, has an interesting history and extras …

Business Insider says that the machine was originally a gift from the two Steves.

It also includes a very rare extra.

You also get an original promotional brochure, a drawing by Ron Wayne (the third Apple founder who famously changed his mind soon afterwards) and a flyer from a practical joke played by Woz and Schoolsky.

All proceeds from the auction will go to FAIRS, a non-profit that helps groups in developing countries put together emergency radio systems. The auction will begin on CharityBuzz on September 12.

CharityBuzz is a popular platform for Apple-related auctions, including lunches with Tim Cook and Eddy Cue, and a previous sale of an Apple I.