I have seen said toilet (or another one that Hitler owned) several times. It used to be part of a Hitler "exhibit" that toured gun shows back in the 'seventies. At that time there was also a bathttub, plumbing fixtiures, silverware and table linens displayed with it.
How one documents the authenticity of such items is anyone's guess.
11 posted on 02/11/2013 8:40:18 AM PST by jboot
(This isn't your father's America. Stay safe and keep your powder dry.)