Excavations in the town of Elephantine between 1972 and 1991 uncovered more than 1600 clay seals, cylinder seals and various other sealing materials, forming one of the largest and most important seal assemblages from an urban Early Dynastic and early Old Kingdom site. At the heart of this substantial study is a catalogue of types, inscriptions and names, supported by an analysis of royal administration on the island of Elephantine, its social organisation and its professions. German text, English summary.