I was sent a link to pieces the Klipsch museum is going to be selling and some of those are holy grail items. Things like a Western Electric 16A horn, Marantz 8B amplifier and lots more. They are not for sale yet but I thought it was cool to see all the stuff. Check out the PDF
http://klipschmuseum.org/sale/KlipschMuseumSale.pdf
http://klipschmuseum.org/sale/KlipschMuseumSale.pdf