Repeater patented by Hahlweg Carl in Paradeplatz 3 Stettin Germany.
Some repeater use the Regulating device for repetitive striking mechanisms patented by Barbezat ( Le Phare)
other Hahlweg patents
hope this help
Waltham chronographs and repeaters were built by Prosper Nordmann on patents of Henry Alfred Lugrin. in 1890 Nordmann moved to Geneve and continued production with 50 employees in saint Jean Geneve. Timing & Repeating Watch Co. in the US was represented by Adolph Schwob nephew of Theodore Schwob...
Found a answer:
"" In the early 1950s, the centrally run JDŽ was one of the last Yugoslav institutions that had not been reformed in accordance with the guidelines of workers' self-government. A reform led to the decentralization of the railway administration, which from 1953 was called...
In fact, I also have Zenith with the JDŽ logo from 1947. But it seems that since 1941 the JDŽ has been spun off into two railway companies, Croatian State Railways (HDŽ) and Serbian State Railways (SDŽ).
The movement provided to Serbian Railways was 20 ½ NVI until the mid 1930s. Then the movement 18.28 3 P is provided where P is the Poussette model (Button) chosen for safety, to adjust the time you had to press the button with your fingernail and turn the crown, impossible to accidentally...