This Type-A-Graph has been well taken care of and placed back in the original packaging after each use.

The blue is weak but this type-a-graph still contains the original pen refills which have never been used so the blue can be replaced when desired. 

It can also be powered by batteries, which I don't believe to have ever been used. The contacts are impeccably clean. 

Please consider photos as part of the description.

Feel free to send a message if any additional info is needed.