The first internationally active company founded by Heinrich Moser was the St. Petersburg trading company, H. Moser & Co. From this name, he developed the company signature in Latin and Cyrillic script, which was almost always accompanied by a medallion. Until about 1918, these symbols were the standard signature on all watches supplied by Moser's watch company. In 1829, Heinrich Moser opened a watch factory in Le Locle, which also bore the name "H. Moser & Co.".

The Russian operation had to be abandoned in 1917 in the aftermath of the October Revolution. In about 1920, the State-owned "Central Watch Repair Workshop" was formed in Moscow from the remains of the Moser watch businesses, from which a watch production facility of its own would eventually emerge. Moser watches continued to be regarded as synonymous with work of the highest quality for some considerable time afterwards. In 1966, the Government of the USSR presented one of its high-ranking military officers with an original Moser pocket watch in 18-carat gold, dating from the period before the expropriation and bearing an engraved dedication.

The name of Moser also died out in this branch of the family in 1923 with the death of Heinrich Moser's only son, who had no male offspring.

WATCHES FROM H. MOSER & CIE INVOLVE TECHNIQUES WHICH DO NOT LEND THEMSELVES TO ECONOMIC PRODUCTION IN LARGE SERIES The uniqueness of H. Moser & Cie watches derives not least from the fact that various parts of the movement have been realized in their historical context. One example of this is the classic screw balance of all H. Moser & Cie movements. It is large, in spite of the long power reserve of the watch. The balance wheel ring is tall and narrow, although it must still accommodate a screw thread for the gold weight compen-sation screws. It is also balanced with adjusting screws, even though
that space must still be available for a slot for pre-loading the screw in the screw thread with a diameter of only 0.35 mm.

H.Moser & Cie Perpetual 1 Collection	H. Moser & Cie Perpetual Moon Collection	H. Moser & Cie HENRY Double Hairspring Collection	H. Moser & Cie Monard Date Collection
H. Moser & Cie Monard Collection	H. Moser & Cie Mayu Collection	H. Moser & Cie Limited Edition Collection