Maria Teresa Catalano, University of Cologne

In the 11th century, participles were occasionally employed on seals to designate particular functions within the Byzantine administrative apparatus or the ecclesiastical hierarchy. The most well-known examples are ekprosopon and antiprosopon, derived from ek prosopou, a term that typically referred to a representative in various administrative departments (sekreta). This paper presents and analyses a few of these participles found on seal inscriptions, examines their meaning, and, where possible, attempts to ascertain whether they were indeed synonyms or merely forms restricted to a specific administrative context.