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if you google Omega Monocontatore you will get a little more information.
Nix Prototype. Ugly dial without feet from one of the many Singer Dial Books , who were sold later from Singer employees ....
The Rolex Passion Report article quoted in the thread linked above included photos of a couple variants for the Monocontatore dial. A black dial (similar to the one shown in the thread linked above) with white sub-dial and an all white dial.
There was also a brighter exposed photo of the white dial variant.
There’s also this video that focuses on the variant similar to the OP.
That Dial is from a prototype dial book of a dial manufacturer . Rejected by the factory. Quite a few of these surfaced 10 plus years ago on the market. Rolex, Tudor, Omega, Breitling and maybe other brands as well . Without Dial feet. No problem to add them later .. The movement bridges with engravings look more worn than the rest. Another put together example ....