Omega from 1938/1939 - how original?

Hello All, I came across this Omega that seems to be from 1938/1939 period with Omega 23.4 SC(?) movement. I'm planning to drive over to the seller on Sat to check it out. But before doing so, I wanted to ask Your opinion regarding it - how legit is this specimen? (sorry about the poor pictures). It looks pretty legit to me, but to which extent, I'm not sure (I tried to look online, but only thing I am pretty confident is that dials (looking) like pictured existed around that time period, and that movement appears to be 23.4 SC). Any help highly appreciated.



(as a side note, I have no watches older than 1950s, so this would be a bit of a new frontier for me...)

31mm (without the crown)

I recently got her 30mm Tissot Rockwatch R150. Somehow I'm suspecting this one wouldn't make the cut though. 😅

So now I am antique watch owner...didn't see this one coming. Here are some quick notes and photos. Appreciate any insights/corrections.

Some observations: 15mm lugs, movement serial 8954304: 1938/1939?, seconds hand color seems slightly off - probably changed at some point, dial has some fading between 1-2. Omega Ref. Ck 2064 I suspect, number on caseback (9383530) I think has been 'scratched' (over the old one?) to keep it legible(?), crown changed (I assume, and is different than in CK2064 drawing). One of the lugs has I 40 (or 140) engraved, which seems to match the I 40 (?) inside the caseback. Dial seems good to me, but...

With no shock protection in 23.4 SC (correct?), I suppose I better wear this one carefully!

Unfortunately it came with a very few details of its past life.

And I should add that it feels pretty incredible to have almost a 90 year old watch that's just ticking along!