Revue Thommen “Landmark”

European Watch Clock and Jewellery Fair 1988 BF 309
This wristwatch features a solar compass. Fitted with a coverlid with aperture and centre disc with 21—hour rotation, it indicates the four cardinal points in relation to the position of the sun, shows the time in 12-hour and 24-hour cycles along with the date. 10-micron goldplated case water-resistant to 30 m. (REVUE THOMMEN “Landmark”)