OK, now that I have shown the pictures and given the information, how can it be that I have a 128k that was bought after the 512k was released (October 7th was the week my 128k was produced but the 512k was made starting on September 10th). How can it be that I have an evenly yellowed (so therefore there has been no rear bucket case swap) and the logic board matches the description of it as a pre-512k Macintosh. So now, what can I do about how I have an original Macintosh 1 month seemingly too late? How did this happen? It supposedly should be a post-512k 128k, but the rear bucket, front serial number, internal logic board all match up to be an original Macintosh.

Once again, did I get a "using up the last of the old parts" Macintosh or is something else the case? Explanations on this second question would be so greatly appreciated (since I may have a way to fix my original issue...)