Calibre catalogue / Extended reserve / 1A23A

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1A23A fitting drawing (PDF)

Dimensions, stem height and hand fitting. Keyed to the base calibre, so sibling references share this drawing. Supplied for casing and fitting purposes only.

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Extended reserve

1A23A

1 Series

—Automatic
—Centre seconds
—Open-heart

Specification
Size	31 mm (1.220 in)
Height	6.5 mm (0.256 in)
Jewels	21
Frequency	28,800 vph (4 Hz)
Power reserve	72 h
Finish colour	White

Check dimensions against the fitting drawing before tooling a case.

Same base calibre

Variants

1A00A

Extended reserve

Automatic · Centre seconds

31 mm · 6.5 mm · 72 h