Obverse: Mercury amid clouds, stars and the Moon in its first quarter. Legend: "ASTRONOMICAL . SOCIETY . OF . THE . PACIFIC". Reverse: A wreath of laurel knotted at the base. Inscription: "THIS . MEDAL . FOUNDED . A . D . MDCCCXCVIII. BY . CATHERINE . WOLFE . BRUCE . IS . PRESENTED . TO....FOR . DISTINGUISHED . SERVICES . TO . ASTRONOMY". In leather case.