Does anyone know what year or years the EZM series dials had "EZM Chronometer" under the logo on the dial face rather than the current "Einsatzzeitmesser"? I prefer the latter honestly but I have noticed quite a few with the former and I didn't know if it was model or year dependent or both. I have searched for an answer but can't seem to come up with a definitive time period as to when they switched.