One of Apple's first computers, a functioning 1976 model, has been sold for a record 516,000 euros (£441,000), Belfast Telegraph reported.

German auction house Breker said an Asian client, who asked not to be named, bought the so-called Apple 1, which the tech company's founders Steve Jobs and Steve Wozniak built in a family garage.

Breker said it was one of only six known remaining functioning models in the world. Breker sold one last year for 492,000 euros (£421,000).

It said the computer bears Wozniak's signature.

An old business transaction letter from the late Steve Jobs was also included.

The Apple 1, which was sold for 666 US dollars (about £440) in 1976, consisted of only the circuit board. A case, a keyboard and a screen had to be bought separately.