Quote Originally Posted by Photo Engineer View Post
I had not figured that this was about actual Lippmann color plates. Most museums have removed them due to the problems with the mercury. So, since they are not on display I would not know what they have in storage. I would assume that George Eastman House has some stored away but they probably will not display them.

Hg was only required for making (quality) Lipps, not for their viewing.
As far as I know, there is no residual Hg in the processed plates, but I guess that is mere speculation; I do not know that this has actually been studied.