1953 Eska extra-flat Square gold case, elegant dial, manual winding movement.

Eska was one of the smallest watch brands in Swiss. After the end of World War I, many watch manufacturers appeared in Europe and Sylvan Kocher & Cie. was of them. The name Eska is the phonetic spelling in French of the letter s and k (es-ka). The wristwatches of the brand included manual and automatic models, besides models with full calendars and digital time displays.