Originally Posted by
nitroplait
I am familiar with this golden "droplet" phenomenon from Leica viewfinders (from the late 50's early 60's).
It is normally considered early stage of separation of the canadian balsam used to cement together the optical elements of the viewfinders.
You can typically see it when looking at the edges through the viewfinder from the front, but not when looking through it the normal way.
However, I have seen the phenomenon on a number of friends Leica cameras more than 20 years ago, yet none have deteriorated further to this day, thus I suspect it is not a critical problem - if a problem at all.
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