That watch looks extremely 1970s. At which time, Mondia were in collaboration with Zenith and Movado. I wonder what is inside. If generic, I would suspect it's a Valjoux 7730 series movement. But I won't exclude the possibility that they got a Cal. 146 from Zenith (Movado got the "El Primero" so a movement transfer to Mondia seems possible).
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