I just cleaned the mirror of a AE-1 with some kind of fuel... dripped on a paper tissue. Went perfectly.
But... the reflecting layer of such first surface mirror most likely is coated for the protection of the metal. And this coating may be affected by cleaning fluids.
The next try after in vain blowing should be use of a very soft brush. Cleaned bevor in fuel to avoid any grease marks.
You could also use a wooden toothpick as it would affect only that very point at the mirror.
The mirror can stand quite some dust. Haze would be more critical. So one has to weigh the risk of removing some uncritical specks against ruining the whole mirror. So at least make a test at one corner.
Last edited by AgX; 03-19-2014 at 05:02 PM. Click to view previous post history.