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It is very difficult to tell for sure from one sideways, compressed picture full of reflections on the internet.
If you forced me to guess, I would say it is a very aged and fragile original. It also shows the reasons why 90% of these got redialled in the first place. The lacquer was severely compromised years ago, moisture got inside the crystal and attacked the dial metal through cracks in the lacquer, causing the pock marks.
I would be curious to see the condition of the back of the case to see if rust is involved.
gatorcpa