I went through some threads here in the LFF about these lenses. Somebody posted a link to a very comprehensive digital book about them located in the CNUM library, edited by the Photo Club de Paris in 1906. It happens that I found one with far better quality (50 versus 9 Mb) and would like to share it here for those interested. There are some pictures in it and it is worthwhile to get the larger one. It is in BnF Gallica. I am considering to buy an anachromatique because I want to try out chromatic aberration with my dry plates. I was a bit annoyed by the idea of having to calculate lens shift after focusing, but it comes with an incorporated scale for that purpose. I might be interesting. If someone has any comments or recent experience with those, please, share.
Link: https://gallica.bnf.fr/ark:/12148/bp...=bpt6k1091147q