This is not just the first laptop ever produced by Apple, but also a very rare Prototype. 
It is not known how many prototypes were built, but guesses are around 50 units. 
 
Characteristic feature of a protoype is the satement: (see also picture)
 
Thsi devise is a demonstration unit only. It is not for sale or lease.
Production units will comply with all appplicable Federal Rules and Regulations.