I was interested in the service dial discussions here as I have a 2577-10 with a 352 RG chronometer movement. I got it as a mixed lot of 5 watches without knowing a lot about it. Doing a bit if research, I quickly realised that the dial wasn't original to the watch. I've been looking for examples of similar dials and was struck by the similarities between my dial and the service dials in terms of the sunburst finish, the markers and the lettering style. So my thinking now, based on these examples, is that the dial was replaced during a service sometime in the 60s or 70s. Don't know if anyone with more experience would agree? Sorry for the quality of the photos.
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