Medal commemorating the opening of the St Petersburg Sea Canal 1878-85. Obverse: Within an ornamented border and laurel and oak wreath tied with ribbon, the heads of the czars Alexander III, Alexander II and Peter I, the two last-named laureate, conjoined (right). Legend in Cyrillic (Commemoration of the opening of the St Petersburg Sea Canal 1878-85). Reverse: Plan of the docks and harbour of St Petersburg and canal shown by a dotted line; above, two crowned coats of arms of the royal families with ribbon and laurel leaves, a larger crown above the whole; below conjoined medallions with dates '1878-85'.