The Omega Calibre 1143

Wednesday 21st August 2013

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The Omega 1143 (ETA 2894-A2) is best returned back to Omega for servicing. It has a piggy back chronograph unit manufactured by Dubois-D茅praz 2020 resting between the dial and the ETA 2892-A2 automatic timepiece. You can see part of the chronograph unit in the picture. The ETA timepiece is smaller than the chronograph which is bolted to the case.

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Generally speaking this is a non serviceable unit (Except Factory). If this fails during or after a service there will be problems in obtaining the parts and the hassle of assembly without the bespoke jigs. I my opinion you will be far better off buying the chunkier Omega Cal 1155 (Valjoux 7750) series Omega or TAG Heuer. TR

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