On 25 May 2013 collectors will have the chance to buy one of the alleged six surviving working Apple 1 computers. Initial reserve is around US$400,000 but who knows?
For the techie in us all the Apple 1 was Steven Wozniak's first PC. It was only built as a printed circuit-board but Steve Jobs insisted (as he was wont to do) it be sold as a PC. Eventually the two agreed to sell the board only for US$666.66 (sign of the devil) via some smaller computer stores and a range of add-ons like a tape-interface were sold separately. You had to build a case (typically wooden).
Period: April 1976 to March 1977
Processor: CPU: 8bit, MOS Technology 6502, 1MHz (no FPU)
Bus Speed: 1 MHz
Onboard RAM: 8 kB
Maximum RAM: 65 kB
Video: VRAM: 1 kB, Mono, max resolution: 60.05 Hz, 40x24 char
The auction has a number of really interesting items including an Apple Lisa-1 circa 1983 which is expected to sell for about US$40,000. You can read more here.
Of interest is the first advertisement for the Apple 1.