An Apple-1 motherboard, number 82, printed label to reverse, with a few slightly later additions -- sold at Christie's auction house for over $200,000 in 2010.
About 200 units were produced in all, though Terrell only purchased the first 50 at $500 each, for a total of $25,000 -- cash on delivery. Apple would release the Apple II in 1977.
The Byte Shop, one of the first personal computer retailers, in Mountain View, California.
Founder Paul Terrell opened the store in 1975.
Most hobbyist computers then were still sold as kits, but the Apple I -- seen here in a Polaroid photograph taken by Terrell himself -- was a fully assembled circuit board with over 60 chips.
To turn the Apple 1 into a working computer, users still had to add a case, power supply, keyboard and display.
The Apple 1 originally sold for $666.66. In November, a working unit was sold at an auction for around $640,000.
Released in 1976, the original Apple 1 computers were hand-built by Steve Wozniak and Steve Jobs. Paul Terell, who owned the Byte Shop computer store, paid $25,000 for the first batch of 50 computers. "Steve was a very clever guy," Terell told FoxNews.com. "That was the seed capital to start Apple."