dsio
··Ash @ ΩFI disagree with the comment that the dial back is typical - in my experience it is not typical for an early 1950s omega constellation or seamaster dial. The appearance of the rivets of this particular watch is for me more typically seen in redials. The point about the notches in the dial being aligned with the dial feet is well taken though by no means a consistent feature. Now I actually agree that the front of the dial is consistent with an original print and would overall consider it an original dial taking front and back views into consideration.
Following are the pictures of 2 early 1950s dials - one constellation and the other seamaster and you can see for yourself they look quite different from the dial of the watch in question. These are to me fairly representative of the era as I have seen many other dials whose backsides look quite similar:
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I know what that second one is 😜