Commodore 64 Diagnostic & Test Cart 1541 "World of Jani"
is on back order
Welcome to the World of Jani 1541 Diagnostic Cartridge!
You get a host of utilities in one cart -
Packaged in a glossy printed box with the cartridge and instruction sheet. Cartridge case colour will vary.
Here's the link to the World of Jani blog packed full of great Commodore stuff! http://blog.worldofjani.com/