In our database (vs. 07/12/2023) we have collected informations for 57879 competitions, which could be viewed by entering the serial number of your chronometer watch.
These data are from publications of the observatories in Neuchâtel, Kew/Teddington, Washington, the german hydrographic institute (Deutsche Seewarte), Besançon, Genf, Greenwich, Yale ...

Please enter the serial number of your watch:

On request we would be happy to provide an abstract of your chronometer watch with all data available for a service charge of 50,00 €.