Marked JST & Co. Hampshire Pottery. Late 1800's. Had something written in gold on the side but most of it is gone. Looks like "TMG Mastons Conn." or something like that. Other than the missing gold and really light crazing, it is like new. High gloss dark olive green. Please note that there is some bubbles in the glaze where it pooled at the bottom (see pic). 5+ inches tall.