Well, I hadn’t taken a close look until you asked. The use of serifs (which mine doesn’t have) and perhaps optical distortion from the crystal makes it look wonky, not to mention the heavy handed and slightly sloppy minute track. The lume looks correct for the era so this could be 100% original with some questionable factory QC, or it was retouched partially- but not totally.
I’m not a Certina expert of this era and there are variations from company to company on how “perfect” minute tracks and fonts had to be.
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