According to the Archives of Omega, the present watch was originally invoiced on 10 July 1934 in Italy.
It is an attractive example of one of Omega's early chronograph wristwatches fitted with the calibre 33.3 CHRO, preserved in very good, original overall condition.
The highly precise and reliable calibre 33.3 CHRO was developed by the renowned watch and watch movement manufacturer Lemania in 1933, in collaboration with Omega since 1932. In use until the early 1950s, the 33.3 was powering a variety of different chronograph models, cases of varying designs either in steel or in precious metals, the dials likewise with different layouts and colours, with or without tachometre, telemetre or pulsometre scales.
Examples of Omega's chronograph models fitted with calibre 33.3 CHRO are illustrated and described in Omega - A Journey through Time by Marco Richon, pp. 532 - 538.