Comment by gh02t

HP was legendary in electronic test equipment and early computers, calculators etc. Look on Ebay for HP branded power supplies or multimeters, for instance, and you'll see that they still command very high prices. And it's not collectors buying them AFAIK, it's mostly people using them-- even 30 or 40 year old gear. They spun off the test equipment division as Agilent (which still exists and is highly respected under then name Keysight) around the time their computing division started to go downhill.