I have a splitting headach again but I will try to respond.
I think we agree with the first paragraph,
but why it is certain to you that Brovira was sensitized
could perhaps be explained in some detail...
Is it just the obvious and undisputed "unbekannt"s,
a lack of speed in your recreated versions,
or published spectral data from actual period emulsions?
My memory says you are right about Glafkides, but I don't hold that against him.
In fact I think it was he who warned about how messy the reports were.
Besides, he only listed a few of the formulas anyway, and as you know there are a lot of them.
I do not think that all of the Broviras were sensitized- although some were.
One of the dyes I know by both name and structure but another just by its chemical name....