This is one of 6 known working original Apple 1 personal computers from 1976. There were about 200 Apple 1 ever built and 43 units are identified to exist to date.
This Apple 1 had been originally restored and framed in 1993 by an Apple enthusiast. In the demo the machine executes some test programs and loads from cassette BASIC and a graphics demo.
The original Apple 1 came only as ready built motherboard: there was no keyboard, no case, no monitor and no power supply included. The buyer/user had to find and attach the peripherals himself.
The machine is pretty solid now - I booted this A1 more than 50 times in the last 2 weeks and it worked flawlessly.