‘Test’ Dial 16520 Rolex Cosmograph Daytona


No, you’re not having an aneurysm. This is a 16520, but not as you know it. This is a test dial, often called a prototype though that’s not exactly correct, made by singer for Rolex before the Zenith Daytona existed for COSC testing. And yet, it looks like what would happen if you asked AI…

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