Macintosh TV (1993)
Nineteen years after its debut, Apple’s first experiment in TV-computer integration remains the rarest full-production Mac ever released. Apple manufactured a mere 10,000 units of the Macintosh TV before pulling the plug four months after its launch.
The Mac TV combined a personal computer with a television set, but the machine failed to fulfill either role particularly well. It was too expensive to be a reasonable TV set, too crippled to be a reasonable Macintosh, and too limited in its TV-computer integration to be a practical hybrid.
Perhaps for those reasons, Apple declined to extend the lifespan of this all-in-one flop, making the Mac TV an exceptionally rare machine today.