Anyone can tell what model this could be?
Was it only a prototype dial which never
was built as a watch? Feet are same position as 321 and 861.

 

Something from Singer perhaps - in amongst the Rolex stuff there is a similar one here http://rolexpassionreport.com/6111/the-story-about-rolex-prototypes-of-dial-maker-singer/

 

No mystery trash-gordon, its a singer prototype called the Speedy Proto Monocontatore

 

And its prototype Rolex counterpart

 

Someone made one of these up a few years ago, just goes to show the dials etc are still out there

 

Thank you for putting this straight!

I think the white subdial version looks much better...

Interesting that the Omega Speedmaster font is the same as on many CK 2915 dials and that it is matching this Racing version on the right, that at least with its red indices shows some parallels to the dial we're discussing here:

Do you know it more precisely?

 

I can’t remember exactly but it may well be the pictured example, it’s an interesting thing for sure, I certainly wouldn’t say no to owning one

 

Longines has a similar one as well:

 

So I just came across this - looks like Dan Henry is making a version of this based pretty much entirely on that prototype Omega dial. It's a quartz movement, but dang if it doesn't look nice:



https://danhenrywatches.com/collections/vintage-watches/products/1968-dragster-chronograph

I like the number font on the original much more, but it is still a handsome piece.