29 of these 80 1st batch Apple-1 still exist. About 80 of the 1 st batch have the handwritten serial number on the back. Only 200 Apple-1 computers were produced in two batches of 100. The Apple-1 is the most valuable microcomputer in the world. The handwritten numbers on the back of some Apple-1 computers, apparently representing a serial number, were the biggest unsolved mystery surrounding Apple's first computer. Steve Jobs wrote serial numbers on the Apple-1 computers The Byte Shop got more than just the 50 and sold some Apple-1 to Data Domain Computers. There are computers whose serial number is greater than 50. The sale of Apple-1 to Data Domain Computers by the Byte Shop explains the higher numbers quite well. They sold 13 Apple-1, 1 was donated to the US Olympic tennis team and destroyed in a plane crash. Ray Borrill, the owner of Data Domain, bought 15 Apple-1. At that time, Data Domain Computers had found a practicalĪpplication. Mike asked Thom Hogan (Data Domain Computer) about this. Data Domain Computer had purchased Apple-1 computers directly from the Byte Shop. But why do numbers greater than 50 exist? Mike The Byte Shop theory seemed to be plausible. Here is a list of all known serial numbers on the back of some 1 st batch Apple-1. Usually it was printed on the board or a label was used. all say that they didn't put the number on the mainboard.įor a factory it would be very unusual to write a serial number magic marker on a pcb. Paul Terrell, the board manufacturer etc. Steve Wozniak, Steve Jobs, Daniel Kottke, But nobody remembers where the number really comes from.

Only Apple-1 computers sold by the Byte Shop seems to have this number. There were many theories surrounding this number. List of all known serial numbers on the back of some 1 st batch Apple-1. None of the 2 nd batch (also called 'NTI' Apple-1) have a serial number. Some (not all!) Apple-1 of the 1 st batch have a handwritten number on the back which is obviously a serial number. Not on every Apple-1 computer is a serial number!

Apple serial number finally solved by