Transatlantic Chronograph, Lemania LWO 283 (ETA 2892 with Dubuis-Depraz Chrono Module), ca. 1990
An easy way to spot a modular chronograph is
to check whether the buttons are on a higher level then the crown. You can see in above picture that this is the case. Since the chronograph module is on top of the automatic movement on the dial side, the chronograph push buttons are higher and not in line with the crown. An easy way to spot a modular chronograph.
obsidian (Dan) posted this interesting fact on the PMWF.com:
I have not found any information on the web yet to confirm this, but will continue to look for a confirmation. Also interesting is the fact that the offset of crown and pushers seems to be more pronounced for the LWO 283 (ETA 2892 plus DD module) then for e.g. a ETA 2824 plus a DD module or the ETA modular chrono 2894. In ca. 2000, ETA started to manufacture their own chronograph modules in order to become independent from Dubuis Depraz. My other LWO 283 chrono is this Bucherer Chronograph.