Nice pic. Unfortunately, you still have me stumped. The stem is ceramic disc, which means it is not in the "ancient" category. The handles could be a lot of things. The spout looks like an old style, but matches the handles.
I have poured through all the resources I can find. Let's hope one of the REALLY old guys can help us out ( I just went on medicare this week, so I am a youngster on here!). That ought to tic someone off!