(AP) -- One of the first Apple computers ever built goes on the Christie's auction block next week -- and it could sell for half a million dollars, or more.
The Apple 1 from 1976 is a forerunner of today's MacBooks, IPads and IPhones.
Ted Perry, a retired school psychologist from California who owns the old Apple, has kept it stashed away in a cardboard box. He says the green piece of plastic covered with memory chips is where the personal computer "revolution" started.
The board was produced by two college dropouts -- Steve Jobs and Steve Wozniak. It first sold for $666.66.
The Apple 1 will be offered online from June 24 to July 9.
Another Apple 1 was sold last month for a record $671,400 by a German auction house.