Many Clamshell Owners don't posess the original Software installation and restore CD (orange or grey) any more.
If you plan to install OS9 (some say they best OS ever) keep an eye out for the orginal white OS9 retail CD with the number 9 in orange.
Beware! Only the CD with the phrase printed on the left side:
To start up from this CD, hold down the C key as the computer starts up
(at the bottom of the picture) is bootable and contains a full version of the operation system.
Bonus software such as AppleWorks, Bugdom, Nanosaur and Faxstf is not included.
The CD on the top of the picture has only a short remark on the right side:
Mac OS 9.2.1 Update CD
and contains no operating system, only update packages you can download for free at apple.com