A historic computer prototype that belonged to Apple Inc. co-founder Steve Jobs is set  to be auctioned.

The prototype was developed in 1976, which was named  the Apple 1.

According to the auction house, the Apple 1 was hand-soldered by co-founder Steve Wozniak.

Jobs reportedly presented the Apple 1 to the world’s first personal computer retail shop owner Paul Terrell.

The Apple 1’s demonstration happened at Terrell’s computer store The Byte Shop located in Mountain View, California.

The demo led Terrell to request a fully assembled computer whose selling price would  be $666.66.

Eventually, Terrell submitted a purchase order of 50 units of Apple 1 computers.

"That was the biggest single episode in all of the company's history," said Steve Wozniak, who designed the Apple 1 & 2.

The auction for the prototype will close on Thursday, August 18, 2022 at 7 PM EST.

RR Auction estimates the prototype has a $500,000 value & 15 bids have been placed  so far.