In creating the Heritage line, H. Moser & Cie. took inspiration from the watches that evoke the brand's history from 1828 to the present day, and specifically those dating from the early 20th century. The distinctive classicism of the Heritage Perpetual Calendar Midnight Blue Enamel is evident not only in its rounded case, but also in the notched crown and Grand Feu enamel dial, brought to life by the Roman numerals and the swallow-tail hands.