Northern Song/Jin Dynasty The jar of ovoid form rising to a short neck with lipped rim, the body applied with evenly-spaced raised vertical trails of white slip, the shoulders set with a pair of ridged and tapering strap handles, covered overall in a black glaze thinning to a a cream colour on the raised ribs and stopping short of the foot exposing the buff-coloured body. 20.3cm (8in) high.