Calibre catalogue / Extended reserve / 1B12A
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1B12A 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.
Extended reserve
1B12A Automatic mechanical movement
1 Series
1B12A has the following listed functions: Automatic · Centre seconds · Open-heart. Its documented specifications are 6.5 mm height; 21 jewels; 28,800 vph (4 Hz); 72 h power reserve; finish colour: White.
- —Automatic
- —Centre seconds
- —Open-heart
| Specification | |
|---|---|
| Size | — |
| 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.
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How to order
Prices on request. Samples available. Made to order, approximately 8–10 weeks. Finishing by Memorigin optional.
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