The Commodore 64 was an extremely popular personal computer, released in August, 1982. It was most successful from 1983 through 1986, when Commodore 64 sales consistently made up 30-40% of the personal computer market, and with 17 million units total sold during its production lifetime, it remains the best-selling personal computer ever.
Serial No.: P 5733722
References:
http://en.wikipedia.org/wiki/Commodore_64