“…Despite the rich material heritage from the Roman period in Bulgaria and the abundance of pottery discovered, provenance and technological studies of ceramic collections using instrumental techniques are very few and consider mainly the chemical composition of medieval pottery (including sgrafitto ) from Northeastern Bulgaria and the Black Sea coast (Kuleff & Djingova, ; Kuleff, Djingova, & Penev, ; Kuleff, Djingova, & Penev, ; Lyubomirova, Šmit, Fajfar, & Kuleff, ) or comparison of some clay sources and Thracian ceramics from South Bulgaria and from the ancient city of Troy (Guzowska, Kuleff, Pernicka, & Satir, ). In contrast, archaeomagnetic studies in the Sofia Palaeomagnetic laboratory have a great tradition in analyzing fired structures and bricks in order to recover the geomagnetic field characteristics of the archaeological past, to explain the physical processes of the magnetic enhancement, and for archaeomagnetic dating (Herries, Kovacheva, Kostadinova, & Shaw, ; Jordanova, Kovacheva, & Kostadinova, ; Jordanova, Petrovský, Kovacheva, & Jordanova, ; Kostadinova‐Avramova & Kovacheva, ; Kostadinova‐Avramova, Kovacheva, & Boyadzhiev, ; Kovacheva, Kostadinova‐Avramova, Jordanova, Lanos, & Boyadzhiev, ).…”