The picture with the signatures...?
http://photos.appleinsider.com/ebay-120412-2.jpg
https://upload.wikimedia.org/wikipedia/commons/7/72/Apple_Ma...
Edit: Here's the story from Andy Hertzfeld, one of the signers, explaining why they might have changed over time: http://www.folklore.org/StoryView.py?project=Macintosh&s...
The molder and engraver did and still do exist. Funny thing, they're not too far from where I'm typing this now. Small world.