This is an original restore DVD for the MacBook Air model. The version number is 2Z691-6437-A. It includes Mac OS X Leopard v10.5.6 as well as the Applications DVD with version number 2Z691-6438-A.
Restore DVDs come with the original booklet and may come with additional items such as stickers.
This restore DVD is for the Late 2008 models. For the Early 2008 models, you will need MacBook Air Restore DVD with Mac OS X v10.5.4.