Attempts to determine the degree of knowledge and skill of the printers and typesetters of the Croato-Glagolitic incunabula of 1483, as well as to evaluate the quantity of the work and material necessary in order to complete the publication of 200 copies, the usual quantity at that time. There have been many opinions and conclusions about the formative aspects of the <i>Missal</i> of 1483 based on a more or less free evaluation of naked eye impressions. This is why this analysis finally emphasizes the need for a multidisciplinary approach in diagnosing all the chemical and physical characteristics of the typography. -- AATA