Bucherer Automatic Chronograph Lemania LWO 283 (ETA 2892 plus DD module), late 1980s
If you look closely or
HOW TO SPOT A MODULAR CHRONOGRAPH
Then you see that the crown is located lower then the pushers. This is in almost every case a clear indicator, that a modular chronograph is at work. Another indicator is the date that is often shown with an internal loupe. Because the chronograph parts are mounted on top of the automatic movement, the date ring lays quite low and an outer loupe would reveal that.
What is the difference between a modular
and a "real" chronograph?
Watch collectors often insist to buy real chronographs. A movement that was designed with the chronograph feature in mind. Modular chronographs are also nicknamed "piggy back" chronographs because of their design.
While purists prefer the real chronographs (the most affordable Swiss version is the ETA 7750), the modular design often allows for lower priced models. This Daniel JeanRichard sold for ca. USD 500 only with the 2894 modular chronograph movement from ETA. And the Bucherer chronograph in the picture was about the same (historic USD CHF exchange rates considered)