
Rare Ebauches SA ESA Prototype
Cal ESA 9162
Case size 37x42mm
Original ebauches sa bracelet
Year circa 1969
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The movement was used in several brand such as OMEGA (Omega1250, Omega F300), IWC Schaffhausen (IWC150), Zenith (Zenith 50), LONGINES (Longines 6312), Baume et Mercier (Tronosonic), Eterna (Eterna sonic, Eterna 1550), Certina (Certina 29-151), Tissot (Tissot 2010).
The movement was licensed by Bulova