According to this (#Observatory_trials_and_standards_before_1973), movements that passed the testing by the Bureaux officiels de contrôle de la marche des montres (B.O.s), the precursor to COSC(?), would be certified as chronometers (just not observatory chronometers). Would you agree?
Here is text: "The database contains all mechanical timepieces ("chronomètres-mécaniques") submitted under the wristwatch category ("chronomètres-bracelet") to the observatory competition in Neuchatel, Switzerland ("Le Concours chronométrique de l`Observatoire de Neuchâtel") from 1945 to 1967 and th
Hi Blonman. The database shows 702 entries for GP chronometers. I know of GP chronometers with serial numbers that do not appear in the database. Is there any known serial number for a GP Chronometer that is in the database but does not have the Observatory Chronometer dial? I mean I hope you are co
I do wonder where all these Observatory chronometers have gone over the years. According to the database, there are 702 for the years 1966/67, 40 the first, then 662 the second yet as best as I can tell, maybe ten have appeared over the last 10 years that can be found on the internet? It makes it ha