Omega 14393.4 Cal.561 18k

Looks like typical blurry photos from a seller who wants to hide something (in this case polishing). What is asking price?

To answer a couple of your questions @skowron.

The watch is a 14394 dome dial deluxe Constellation with a solid gold dial and associated wide flat onyx inserts.

The addition of ‘CALENDAR’ is a more uncommon dial variant but a known variation.

The crown is a modern replacement crown.

Unfortunately the case is quite heavily polished and hence the asking price - which would be significantly more if it were in better condition.

For comparison the case should look something like my 14382 deluxe.

If you mean the same style of crown - yes - but mine happens to be an original crown rather than a replacement.
The way to tell is the shape of the Omega symbol on the crown.
The original crown symbol looks 'squashed' - like the symbol on the dial.
The replacements have a much rounder symbol with turned up feet.

The decagonal crown is the standard crown for constellations.
The thick version was used up until the 2852, the predecessor of the 14381/14393.
The new decagonal crown was thinner, like the ones on the two watches above, it was then also used on doglegs.
However, there is a variation of crown used on some 14381/14393s (and very occasionally doglegs)- the thin scalloped crown.
You may have thought this was the only crown - when in fact it is the alternative (albeit correct) crown.

Omega no longer produce the thinner crown, so there are a lot of counterfeits out there.

Hope that helps