Got an AUFSU

[MartinL]

I love it. I can't swear to how often I'll actually use it after the novelty wears off, but for a couple of days and maybe a hundred belly-shots it has been a very cool little tool. First question:

The "body" is Excellent ++, but one glass shows a kind of bubbling as when a surface layer begins to separate. Some very slight perimeter ??fungus? or ? Could be that the mirror backing has some pitting. Plus one tiny "fleck." As terrible as this sounds as I describe it, I'd say that the viewer is 90+% functional. Very bright and good frame lines. Seems like this is quite a prize that's worth making right and preserving. Opinions about professional cleaning? Who?

2nd Question: What does AUFSU mean or stand for?

Martin