Assertion: mechanical timepiece | /r/HasProperty | certified as observatory chronometers
Facets:
value: by the observatory in neuchatel
type: LOCATION
value: from 1945
type: TEMPORAL
Source sentences:
text: In 2017 the Observatory Chronometer Database (OCD)  went online, which contains all mechanical timepieces ("chronometres-mecaniques") certified as observatory chronometers by the observatory in Neuchatel from 1945 to 1967, due to a successful participation in the competition which resulted in the issuance of a Bulletin de Marche.