Mainly steel nibs, with the following names: ABT, Arno, Brenta, Tevere etc. Good quality ABT gold nibs are also known. In the 1950s student pens with steel nibs were marketed. The symbols of the brand is a ramping bull. Nibs have various imprints, ABT, Iridium, Invitto, Warranted. See the relative trademarks.
- Place of production Torino
- Production time 1940’s/1950’s
- Owner Achille Busi
- Company Achille Busi Torino ( the three initials compose the acronym of the brand)