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Model review / Automatic winding

ochs und junior anno: an annual calendar that speaks in dots

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Dots display the date, month and weekday. Oechslin’s annual calendar needs correction on 1 March and runs on an ETA 2824-2 base.

Published 28 October 20264 min read
anno oj blue and brass
ochs und junior · Image source

The essentials first

In one minute

Case42 mm
CalibreETA 2824-2 + annual calendar
Power reserve38 hours

Why it is interesting

The attraction is the calendar’s own logic and restrained design. Dots take learning, but they make a familiar complication interesting again.

Things to consider

38 hours is limited for a weekend unworn. The shop indicates approximately two months until ready.

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ochs und junior · anno oj blue and brass

The model in detail

The anno replaces calendar windows with three groups of holes revealing coloured dots. The perimeter gives the date; separate circles show month and weekday. Familiar minute markers provide orientation: the 30-minute marker corresponds to the fifteenth day. An initially puzzling display develops its own reading logic.

Ludwig Oechslin’s annual calendar accounts for 30- and 31-day months. Correction is required on 1 March. An automatic ETA 2824-2 provides the base; the model’s interest lies in the compact calendar construction above it. It is a useful example of separating a base movement’s origin from the originality of its complication.

The anno oj blue and brass uses a Grade 5 titanium case measuring 42 mm across and 11 mm thick. A blue background meets brass-coloured luminous markings. Specifications include 100 metres of water resistance and 38 hours of reserve. That is limited for a weekend unworn: stopping means resetting the calendar.

The official shop lists CHF 5,077 for export or CHF 5,488.20 including Swiss VAT at 8.1%, with an estimated two-month preparation time. These are listing details at the time of checking, rather than a promise of immediate delivery. It will appeal to someone willing to learn an unusual way of reading the date and who values a clear engineering idea.

Sources

ochs und junior — anno: construction and specificationswww.ochsundjunior.swissochs und junior — anno: official shop and photographswww.ochsundjunior.swissochs und junior — annual calendar principlewww.ochsundjunior.swiss