Rare Omega De Ville Dynamic – Tool 107 with Unusual /314 Bracelet?

I recently acquired an Omega De Ville Dynamic (Tool 107 caseback) with a rather unusual bracelet.

• Caseback: Engraved “Tool 107,” fully consistent with late 60s/70s Dynamic models (e.g., ref. 166.145 or 166.039).
• Dial: Original “De Ville Dynamic” dial with day-date window at 3 o’clock.
• Bracelet: Stainless steel Omega bracelet, signed “Omega Stainless Steel” on the clasp, with a reference ending in /314.

Here’s where it gets interesting:

I have never seen this…

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