This is an extremely rare disc used in the past by the Nintendo World Class Service to diagnose issues with various GameCube hardware. Most copies of this were taken back by Nintendo once the service ended, so very few exist in the wild - though I am not sure of an exact count.
Other information:
- There is no manual. The service disc never had one to begin with.
- Mint condition and has NEVER been used.
- The only blemish is on the front of the case, as noted in the last photo of this listing.
- Will be shipped in a hard protective pelican case.