I recently cleared out my mothers basement and found an original Macintosh 128k with the original keyboard, floppy disk reader, mouse, and printer in all working condition. Unfortunately the box was no where to be found but I was able to scavenge a few users manuals. I ran the serial code through a decoder and discovered it was the 844th Macintosh 128k made which made me pretty excited. After a few days i finally got around to dusting her off and noticed there was a label on the back below the FCC ID that labeled the Mac as a 512k. After doing some research i discovered Apple had an upgrade option where users could send their Mac's in to be upgraded. Does this make the Macintosh more valuable or does this mean it's essentially a 512k? It's a bit confusing situation since 128k upgraded to a 512k is probably more rare than the original two together. So it's very difficult to know just how rare and valuable it is. Either way it's nice to have this amazing piece of history though. I'm looking forward to seeing what you all have to say about this mysterious and crazy find. Cheers.