I like this one too. Not sure if the tachymeter scale is correct for this one but easy enough to get the more traditional one.
I have one with the same Tachy. Seems to be correct but rare. https://omegaforums.net/threads/ref-188-0002-tachymeter.58420/
That's interesting, I bought it off Tom Dick and he thought it might be from another watch manufacture like Tissot if I remember correctly.