U+10013 Linear B Syllable B081 Ku

The Wikipedia has the following information about this codepoint:

Linear B is a syllabic script that was used for writing in Mycenaean Greek, the earliest attested form of the Greek language. The script predates the Greek alphabet by several centuries, the earliest known examples dating to around 1400 BC. It is adapted from the earlier Linear A, an undeciphered script potentially used for writing the Minoan language, as is the later Cypriot syllabary, which also recorded Greek. Linear B, found mainly in the palace archives at Knossos, Kydonia, Pylos, Thebes and Mycenae, disappeared with the fall of Mycenaean civilization during the Late Bronze Age collapse. The succeeding period, known as the Greek Dark Ages, provides no evidence of the use of writing.

Linear B was deciphered in 1952 by English architect and self-taught linguist Michael Ventris based on the research of American classicist Alice Kober. It is the only Bronze Age Aegean script to have been deciphered, with Linear A, Cypro-Minoan, and Cretan hieroglyphic remaining unreadable.

Linear B consists of around 87 syllabic signs and over 100 ideographic signs. These ideograms or "signifying" signs symbolize objects or commodities. They have no phonetic value and are never used as word signs in writing a sentence.

The application of Linear B appears to have been confined to administrative contexts. In all the thousands of clay tablets, a relatively small number of different people's handwriting have been detected: 45 in Pylos (west coast of the Peloponnese, in Southern Greece) and 66 in Knossos (Crete). Once the palaces were destroyed, the script disappeared.