Hm. I have a post September 10th 128k-model board in my Macintosh 128k (but with an original Macintosh rear bucket), Apple branded RAM chips, stock 128k amount even, not a single chip ever replaced,(if I felt like opening it up I would and will if you really need proof) but it's gotten a steady stream of use from all of it's owners, and so with a significant amount of reinforcement from God, it still chimes, gives a Happy Mac, and finishes booting up almost every time (corrupted software on one particular boot floppy that later went sour being the only exception, indeed the Sad Mac code was the much more benign 0F starting sequence even.) Switched to my other boot floppy options, been once again back to chimes, Happy Mac showings, proper boot ups, and proper operation from desktop to disk ejection (using System 1.1 Finder 1.1g) and shutdown.
My 128k must be the only stock one (or at most one of a pathetically small number) with all matching Apple logo RAM chips and proper operation. I invested in 4 major peripherals for it from evilBay I was so thrilled with it's continued "just working".
I wonder, given the horrible reliability rates of stock 128k boards with Apple branded RAM chips, if that makes my 128k worth more than one with a pre-September 10th logic board with failed or replaced non-original RAM chips.
It does have screen burn-in, and some minor scratching, but this topic has put some really wild thoughts in my head that I want to make sure are wild.