The Breitling Watch Source Forums

Does anyone know how the ETA-7750 movements used by Breitling are signed? Breitling calls them B13 but I don't know what into the base plate stamped are? Either 7750 and the ETA logo or just B13. E. g. IWC signes their 7750-s just 79320 and without the ETA logo. Does not make any difference (my experience is that among all the 7750-s I ever had - and I had a lot - Breitling does the best job in regulating, or I simply always had luck), just I'm curious to know.
Thx,
Robert

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