Omega - Marine Standard First Water-Resistant Shaped Omega “Baumgartner System” Cal. T 17 Circa 1939 Ref. CK 3635

Here is this Omega Marine Standard, reference CK 3635, dating from around 1939. A historically significant Omega timepiece from the Marine collection, which was among the earliest wristwatch designs developed to resist water. It is particularly distinguished by its unusual case construction, known as the “Baumgartner System”.

Its rectangular stainless steel case measures 23.3 x 37.85 mm and features an original construction characteristic of early water-resistant watches. The dial displays extensive natural oxidation, resulting in a distinctive brown patina with warm copper tones. Despite its age, the Omega logo and the manufacturer's inscriptions remain visible. The large black Arabic numerals are particularly well preserved, providing an attractive contrast against the aged dial. Two elegant blued hands indicate the hours and minutes, while a small seconds subdial is positioned at 6 o’clock.

The “Baumgartner System” is a case construction developed to improve the water resistance of early Omega Marine wristwatches. Its design is based on a two-part construction, with an inner case housing the movement that fits into an outer protective structure. This arrangement was intended to help prevent water from entering the watch while maintaining an elegant rectangular shape. Particularly innovative for the 1930s, this system reflects Omega’s early developments in water-resistant watchmaking, long before the introduction of modern diving watches.

The watch is powered by the manually wound Omega calibre T17, a shaped movement developed for the manufacturer's rectangular watches. It features 15 jewels and operates at a frequency of 18,000 vibrations per hour.

It comes fitted with a stainless steel Milanese mesh bracelet, not signed Omega, which can be adjusted to accommodate different wrist sizes.

The watch comes with our 6-month warranty.