I recently purchased my first Compact Mac, it has the Macintosh 512k badge on the back; however, when I looked at the serial number, I was very confused. It appears to have been made on the 3rd week of 1984. I decided to open it, and it looks like there was some modification done to the logic board in 1986. My theory is that it was originally a 128k, and it was upgraded. For some unknown reason, they put a 512k back on it, which is odd. I have provided pictures, does this look like a 128k board that may have been made in the 3rd week of 1984? I have yet to find a Macintosh made before the 3rd week of 1984.
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