I've got one in similar condition that I'd let go of for $6000. I recently replaced the siderails and lockbar with high polished chrome. It came from a multi-million dollar estate sale. I can't say for certain that it's HUO, but it looks the part both inside and out. The playfield has no wear at all.
http://s759.photobucket.com/albums/xx239/STEVE792/SS/
Thanks,
Steve