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In know that dials from that era were not as precisely printed as dials are today, however I think this an older redial.
The tiny nick on the edge of the dial at 3 o'clock (use to index the dial for multiple colours).
The alingnment of Swiss Made.
The inconsistent weight to lettering and minute/second marks on the main and sub-dials.
Note that this is only my opinion based on the examples you've provided as I have no experience with vintage Vulcain chronos.