This seal shows two griffins attacking a bull. Evans thought that there was a Linear B ideogram between the two griffins and that this signified a palatial office, but it is not clear whether it is a sign or a plant.
Bibliography
Evans, Arthur. 1935. The Palace of Minos at Knossos, IV, p. 624, fig. 611
Myres, John (ed.). 1936. British Archaeological Discoveries in Greece and Crete 1886-1936, p. 29
Hughes-Brock, Helen and Boardman, John. 2009. Corpus of Minoan and Mycenaean Seals VI: Oxford, the Ashmolean Museum, no. 395