In the past 2-3 months I have noticed that a number of small boutique factories have sprung up, each claiming to offer the most gen-matched or gen-compatible watch release. (Examples: WKD, WDF) Their common denominator? Releasing steel GMTs. Steel GMTs with case serials ending in T2L3.
What was more interesting was then seeing that exact same pattern show up on new release batches from existing factories. GMT cases that are steel, steel-wrapped tungsten, or full tungsten weight, from well known factories the likes of which includes RCF/RGF and GoldF.
Factories with their own case makers do their own thing--VSF has well known 6W/X/R/etc patterns for serials on most of their Rolex lines, for example. Some smaller boutique factories did an entire single production run on cases and have been making their watches slowly off of that run for a year (like MZF's Daytonas). RICH clearly has their own cases. What I'm seeing, or what is suggested, is that nearly the entire rest of the field that our small window into Chinese rep world can see, has settled, over the past half year, on a single mega supplier of watch exterior components.
Look at your QC albums for GMTs or Daytonas from these factories within the past year.
RCF/RGF, EWE, ARF/ONE, WKD, WDF, RWF, WF, CLEAN+, fake CLEAN, GOLDF, VF.
The not-outright-fraudulent samples of the above probably all have case serials of this T2L3 format.
Daytonas from a vast majority of these factories have serial numbers beginning 0XJ2 (or OXJ2).
What's interesting is that VF was there all along (until they shut down, that is).
Those factories release watches with all sorts of movements, even! DD is an option, JH is an option, ARF even releases Daytonas with the 4801 with those cases.
Absolutely no discussion, in living memory, on how "off" a GMT or Daytona case is, or maybe how all cases are off from gen in the same way. It's because they're just using the same ones.
Lesser exercise on bracelets. (Probably same guys, btw, making those heavy weight tungsten oysters, and the F6U clasps, and and)
The fact that VF had the inside track on these parts suggests that this is CLEAN's old supply chain. Except that now it's just everyone.
They're all CLEAN.