A European form used for liquid medicines and made in both China and Japan, most often in the 17th century, these bottles were sometimes labelled with the names of potential contents or of an owner. D.S. Howard, The Choice of the Private Trader, London, 1994, p. 204 notes that the 'double rings enabled a skin or parchment strip to be tied with a thong over the mouth which could then be sealed with wax.'