category are located in Kyoto. Archaeological materials The category includes some of the oldest cultural properties, with 49 designated National Treasures. Many of the National Treasures in this category consist of large sets of objects originally buried as part of graves or as offering for temple foundations, and subsequently excavated from tombs, kofun, sutra mounds, or other archaeological sites. The oldest items are stone tools from the paleolithic period and flame-shaped pottery and dogū clay figurines from the Jōmon period that reflect early Japanese civilization. Other items listed include bronze mirrors and bells, jewellery, ancient swords, and knives. The most recent object, a hexagonal stone column, dates to the Nanboku-chō period, 1361. Most of the materials (31) are located in museums, with six National Treasures in the Tokyo National Museum. Crafts The category includes 254 National Treasures, of which 122 are swords and 132 are other craft items. Swords Swords are included in the crafts category, and either the sword itself or a sword mounting is designated as a National Treasure. Currently 110 swords and 12 sword mountings are National Treasures. The oldest designated properties date to the seventh century (Asuka period). However, 86 of the items are from the Kamakura period, with the most recent object from the Muromachi period. The designated items are located in Buddhist temples, Shinto shrines, museums, and private collections. Non-swords The crafts category includes pottery from Japan, China and Korea; metalworks such as mirrors and temple bells; Buddhist ritual items and others; lacquerware such as boxes, furniture, harnesses, and portable shrines; textiles; armor; and other objects. These items date from classical to early modern Japan —and are housed in Buddhist temples, Shinto shrines, and museums. Also included in this category are sacred treasures that worshippers presented to Asuka Shrine, Tsurugaoka Hachimangū, Itsukushima Shrine, Kasuga-taisha, and Kumano Hayatama Taisha. The treasures were dedicated to the enshrined deity of the respective shrine. They comprise garments, household items, and other items. Historical materials Three National Treasure sets are catalogued in the category . One set consists of 1,251 items related to the Shō family, the kings of Ryūkyū, who ruled over most of the Ryukyu Islands between the 15th and 19th century. The designated items date to the second Shō Dynasty (between the 16th and 19th century), and are located in the Naha City Museum of History. Within this set are 1,166 documents or records, including construction