Commodore made the C-64 for about 11 years, so it’s probably no surprise they went through several Commodore 64 motherboard revisions during that time. Collectors enjoy the challenge of trying to get a machine with each type and revision of board, and knowing the characteristics of each board can help someone puzzle out the history of a machine, such as whether it had been repaired in the past.
Commodore made a lot of changes to the 64’s outward appearance over the years, but they made a lot of changes internally as well. This helped them drive the price down from $595 to $149 over the course of about three years.










