Even more important is the question of the pre-Seljuq work in the Masjid-i-Jami’ of Isfahan. It is the most interesting, and, in the loveliness of some parts, the most beautiful of Persian buildings. No one can stand in its great dilapidated court, or under the Seljuq domes, where the loud flight of agitated pigeons leaves a profound silence that seems to roar in the ears, without a sense of awe. It is the work of many periods. But in the succession of these it contains hardly anything that is not of the best…” (Eric Schroeder, Standing Monuments of the First Period, 1967). The text publishes a thorough research of one element of the pre-Seljuq work of this monument, its wall painting. The few fragments discovered during the excavation of the Italian archaeological mission of the 1970s are here analysed with the help of various scholars from different fields of research. Their contribution reveals a fascinating glimpse of a little known artistic genre of the early Islamic art. The Author: Michael Jung is Curator of the Department of Islamic Archaeology and Ancient Southern Arabia of the Museo Nazionale d’Arte Orientale/Rome. He has participated in numerous archaeological missions in Spain, Syria, Yemen and Iran. Currently he is scientific director of CONTENTS A short outline of the main building phases of the Great Mosque Michael Jung The wall paintings of the pre-Seljuq mosque Michael Jung Introduction to the research of the excavated fragments The refined typology of the wall paintings Chronological attribution and search for comparisons The wall paintings of the post-Seljuq mosque Michael Jung The excavated mural paintings of sector 112 Two paintings of mosques and hand-prints The wall paintings of the gav-chah Materials and painting technique of the wall paintings of the pre-Seljuq Isfahani Mosque Paolo Cornale, Fabio Frezzato, Michael Jung, Claudio Seccaroni Digital microscope observations Plaster Final coating of the mud plaster Polychromy and colored decorations Blue Red Gilding Discussion and additional observations Botanical characterization of some iconographic painted elements Antonella Altieri Summary Michael Jung, Claudio Seccaroni Bibliography