Constellation C-case Florentine Finishing?

I'll preface this with:

http://www.ebay.com/itm/OMEGA-CONST...954475584?pt=Wristwatches&hash=item19d566f040

Its a Ref BA 168.019 in yellow gold with a Cal 751 Day-Date movement

The caseback is a mess, the engravings have been half polished off, badly, and the medallion is a dog's breakfast. The case is dinged and dented, and I have no interest in buying this watch, however I'm curious about the case.

The case has a cross-hatching pattern engraved into it that almost mimics the pattern of the silky guilloche dial. I know there were some jewellers that did this kind of thing aftermarket but also Rolex and others did it from the factory on some models (Some 1803 Day Dates have it, and also Bark finishing, neither of which looks attractive if you're under 80 years of age). I'm just wondering if this likely left the factory like that or if it was something done after the fact

This would be a Florentine finish and I've never seen a factory case with it.

That said as we all know with Omega almost anything is/was possible, but I say jeweler applied.

That was the word I was looking for 👍

I know it was on some of the egg shaped integrated bracelet De Ville 18K gold models made in the 1970s from the factory but yea, never seen it on a C-Case

Guess then that added to the caseback and dial furniture makes this one a big of a sad old pig 🙁

Yes, if Omega had done this the hatching would have been perfect. Someone had an idea, but it was far short on execution, 🤦