BRAUN ET90 4769 "protocol"

http://www.botterweg.com/Auction/Bid/tabid/59/lotid/4804/language/en-US/~/Braun/~/Braun/Lot-4804.aspx?tabid=59&lotid=4804&language=en-US

HP-28S as New

CASIO FX-9860G SLIM

Kirchhoff  laws - remembering the 70's at school...

http://www.hpmuseum.org/forum/thread-1938.html