Ulysse Nardin Marine Chronometer Age Determination Based on Sold Pieces / Invoicing

100 September 1903

500 October 1912

1000 March 1918

1500 October 1920

2000 July 1924

2500 February 1929

3000 February 1932

3500 October 1939

4000 February 1942

4500 April 1943

5000 May 1944

5500 March 1945

6000 April 1949

6500 May 1950

7000 March 1953

7500 July 1956

8000 June 1957

8500 October 1957

9000 November 1959

9500 June 1962

10,000 April 1969

10311 January 1984

Source: Konrad Knirim "Military Time Pieces"