Swiss chronometer movement for testing Circa 1952

Chronometer movement in aluminium case
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A Swiss chronometer movement in an aluminium case for Observatory testing, circa 1952. Glazed ¾ plate movement, Guillaume balance. White enamel dial with Arabic hours, outer minute divisions and subsidiary seconds at 6 o’clock. Dial signed, movement signed and numbered. Comes with four Extracts from the Chronometer Archives by Andreas Hidding.
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Dimensions: 50 x 45 mm
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Weight: 104 g
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Signed: Omega Swiss made
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This Omega chronometer movement was tested four times in chronometer trials:
– 1965 at the Geneva Observatory, where it finished in 12th place (140 participants) in the class “Concours D / Bracelet” class
– 1966 at the Geneva Observatory, where it finished in 70th place (126 participants) in the class “Concours D / Bracelet” class
– 1966 at the Neuchâtel Observatory, where it finished in 11th place (260 participants) in the class “Chronomètres – bracelet”
– 1967 at the Geneva Observatory, where it finished in 60th place (80 participants) in the class “Concours D / Bracelet”
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The seconds dial of this Omega chronometer movement still bears the marker of the visual check. The movement was adjusted by André Brielmann, one of the most famous regleurs at Omega.