Number | Date | Country | Kind |
---|---|---|---|
03623/86 | Sep 1986 | CHX |
Number | Date | Country |
---|---|---|
556026 | Jan 1932 | DE2 |
1478890 | Dec 1939 | DEX |
873520 | Mar 1953 | DEX |
2132540 | Jan 1973 | DEX |
7197 | Oct 1893 | CHX |
18199 | Dec 1898 | CHX |
22282 | Aug 1900 | CHX |
59451 | Apr 1912 | CHX |
453216 | Jun 1968 | CHX |
510739 | Aug 1939 | GBX |
Entry |
---|
M. Th. Kuhl's, "Konstruktionssystematick bei Datumuhren" (Systematic analysis of the construction of date-watches), (Annals of the German Society for Chronometry), vol. 27 (1976), pp. 121-172. |