A Jizhou tortoiseshell-glazed jar, Southern Song, 1115-1234, well potted, with four shoulder lugs and a good even brown glaze covered with slightly raised russet splashes, unglazed base, 9.7 cm x 10.2 cm, fitted box. Provenance: R & V Tregaskis, late 1990's. See The Worlds Great Collections, Oriental Ceramics', vol 10, Museum of Fine Art, Boston, cat no 173 for a Jizhou jar of the same shape & date