I'd like to clarify what is the recommendation with regards to the main catalog numbers and secondary numbers (letters).
I was under an assumption that in most cases there is only one main catalog number (for a particular catalog, obviously) that is provided/displayed as a "Reference Number" under "Overall Information" section. The secondary number/letter goes into the dateline comment, e.g. "s. Specimen" or "P#123s Specimen".
What about this note though? It lists Pick numbers for all variants under "Reference Numbers". Is this what we want to have?
To me it is just a question of consistency. If that's what we like we should do it for all the notes.