It seems that the printer I create is not the same, because it close the activty in 1994, so I think that the info given by @Indomini16 is from a different printer. The original info is correct, but I don't know if the italian banknote attached to this printer is correct (it could be because is before 1994)
No idea then if the printer is the same, but the original info that is now in Numista is correctfor the banknotes of Spain. According the letter you talk about, I'm confused if it is the same company.
Coin referee for: Andorra, Equatorial Guinea, Marshall Islands, Moldova, Liberia and Spain
Banknote referee for: Andorra, Equatorial Guinea and Spain
”La imprenta se funda en Milán en 1876 por Dino Coen con el nombre de Officine Grafiche Coen & Compagnie, conociéndose como C & C y especializándose en documentos de seguridad, acciones, bonos, etc. pero sin llegar a fabricar billetes de banco hasta 1937 a petición del Banco de España. La ascendencia judía de los Coen origina que, ante la presión del movimiento fascista en Italia contra los judíos, los hijos, sucesores de Dino, Renato y Augusto, deciden cambiar sus apellidos y adoptar el de su madre, Giori, renombrando a la empresa como “Calcografía & Cartovalori”.”
Yes, I think the same that the italian banknote is from the same printer, I agree with you. So for me the decission is to keep all as it is. The Company is the same in all banknotes, only a name change happens due to political issues, not a merge with any other company. Do you agree or you think in other "solutions"?
Coin referee for: Andorra, Equatorial Guinea, Marshall Islands, Moldova, Liberia and Spain
Banknote referee for: Andorra, Equatorial Guinea and Spain
That is not true, when you see the page of this printer in Numista, 3 names are used (and is for the same printer for sure),
it does not matter to me which one to put as the main name (if you want we put Calcografia & Cartevalori as the main name), but the three names are the same company, and those 3 names are used on the Spanish banknotes, so nothing is wrong.
I repeat, if you want, we can change to Calcografia & Cartevalori as the main name and the 2 others as alternative names.
Coin referee for: Andorra, Equatorial Guinea, Marshall Islands, Moldova, Liberia and Spain
Banknote referee for: Andorra, Equatorial Guinea and Spain