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Erwin Sattler

Illumina Secunda

Illumina Secunda

Regular price $49,800.00 USD
Regular price Sale price $49,800.00 USD
Sale Sold out


  • Illumination in the clock and indirect illumination behind the clock
  • Three-part dial
  • Secret compartment in the base


In the modern case, with its curved surfaces and polished inlays, the precision movement with seconds pendulum not only finds protection, but also shines through various built-in LEDs. Thus, not only the illumination of the inside of the clock, but also an indirect background illumination is on board.

A newly designed, three-part dial with recessed scales, offered in two versions, completes the harmonious appearance of the clock.

Another detail: small items can be safely hidden and stored in the base, in a secret compartment.


- Black varnish with hand polished carbon cassettes

- Black varnish with hand polished cassettes in black-brown

Metal inlay in rim and base

Height: ≈81.1 in (206 cm), Width: ≈13.78 in (35 cm), Depth: ≈9.06 in (23 cm)

Glass window in the top of the case

Door with magnetic closure

Secret compartment in the case base: Height ≈18.11 in (46 cm), Width ≈11.81 in (30 cm), Depth ≈6.3 in (16 cm)

Illumination in the clock and indirect illumination behind the

clock, can be switched and dimmed individually by remote control


Anti-reflective mineral glass, U-shaped glass


Sattler calibre 1965, cutaway in the front plate,

three arms esapement wheel bridge domed and polished by hand,

visible escapement (Graham) from the front

Power Reserve

30 days


3100 g weight with pulley with ball bearings


Invar pendulum (diameter 12 mm (≈0.47 in)), temperature and air-pressure compensation by 5 aneroid capsules with air pressure display in mm/Hg

Ball Bearings

5 precision ball bearings

Jewel Bearings

11 in screwed-in chatons, 2 agate anchor pallets


Anodized, three-parts with recessed scales, cutaway in seconds dial, numbered consecutively


Natural anodized dial version: Blue steel hands domed by hand

Black anodized dial version: Polished steel hands domed by hand

Beat Rate

3.600/h = 60/min


65 kg (≈ 1043.3 lbs)

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Treasures are kept safe and hidden inside a fascinating and impressive precision pendulum clock

The Troja Sonata M, a precision pendulum clock with half-hour impact mechanism and moon phase display. As an imposing grandfather clock, it can also hide the most secret treasures … In addition, the video also shows the Secunda Sonata, the counterpart as a classic precision pendulum clock for the wall.