An antique Dutch silver porringer, .934 silver, Rotterdam, pre-1795 mark, maker's mark illegible the circular bowl repousse with bead work and sinuous tendrils, flanked by cast openwork double classical dolphin handles, marked to the rim with illegible maker's mark, standard province mark - lion rampant in a crowned shield, town mark of Rotterdam mark and illegible date-letter. Weight 168g height 4.5 cm, length 22 cm, diameter 14 cm