This thread is a bit of a tease, so I apologize in advance... In a basement, in an undisclosed location, I have an Apple II bare motherboard (zero parts installed). I also have (IIRC) a few other bare boards and some engineering drawings. Plus a fully assembled II+ and boards, which is somewhat less exciting. I don't know what revision any of this stuff is, but I got to wondering how the previous owner (who I've never met, but know was an engineer) might've came upon it. How rare are bare (prototype? sample?) parts like this? Next time I have a chance to rummage this basement, what details should I look out for to elucidate this stuff's history?