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UN observatory competition chronometer, w. Peseux cal. 260, by SteveG

June 6 2004 at 3:57 PM

Marcus Hanke  (Login mhanke)

Response to UN watches prior to 1990

30mm diameter (the maximum allowed for "wristwatch" movements), one of about 3700 such movements supplied to various manufacturers by Peseux from the late 1940s through the late 1960s. The split, bimetallic balance and blue-steel hairspring were probably fabricated by (or uniquely for) UN:

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