Bizen ware sake bottle in the shape of a wild duck
https://asia.si.edu/object/F1896.58
<p>Sake bottle (tokkuri), gourd-shaped, with pinched body; twisted bulbous neck and short spout. Restoration on spout. Clay: fine, fired reddish-brown. Glaze: lustrous, mottled reddish to blackish brown, iridescent areas, yellow spots. Impressed mark: Character tera in seal script within outline of folding fan.</p>