orologio en CB01 OFFICIAL. In the Dutch town of Saardam, Tsar Peter the Great has disguised himself in order to learn the art of ship-building. Another Russian named Peter also works at the wharf, causing a comical case of mistaken identities. Emissaries sent from France and England have difficulty locating the man they are looking for, and the lovely Marie is courted by both Peters. An adaptation of Albert Lortzing's eponymous comic opera (1837).