Clusters by material and shape
Cluster Nr. 1 (503 seals)
Cluster Nr. 2 (146 seals)
Cluster Nr. 3 (93 seals)
Cluster Nr. 4 (137 seals)
Cluster Nr. 5 (27 seals)
Cluster Nr. 6 (34 seals)
Cluster Nr. 7 (15 seals)
Cluster Nr. 8 (26 seals)
Cluster Nr. 9 (20 seals)
Cluster Nr. 10 (32 seals)