I'm reposting photos of my gen Vacheron Constantin Overseas, and after that, a photo comparison between the gen and rep (cartel version, but with lower quality bracelet, and short second hand).
I think that the VCO from Puretime, which is essentially the one Silix used to offer, but without the double AR, is the best available on the wrist. In particular, it has the trapezoidal date window, larger Maltese cross, and larger arabic numerals, as well as a shorter crown. I have however seen a variant (with the black dial) which has the cartel case, with the Silix type dial, but it had a white on black datewheel (which is incorrect). A word of caution, the VCO has many small variations, and this is a watch where you really have to rely on QC photos, as opposed to just what is showed on the dealer websites. There are different crowns, casebacks, bracelets, dials, and watch hands.
This is the side by side photo comparison of the genuine and an older replica (cartel) versions of the Vacheron Constantin Overseas. The bracelet is a bit lower quality than the non-cartel version of the VCO that I currently have, in that the shiny beveled part between the links is cut more deeply than on the gen. However, I have seen cartel versions of the replica with a higher-quality bracelet.
There is a good comparison of the rep and gen VCO here:
http://www.replica-watches-guide.com/forum/lofiversion/index.php/t141.html
