Hate to burst your bubble, but that is not a Ken Trading RXW. It's a knockoff of a knockoff.
Ken Sato of Ken Trading, as your post mentions, was an homage specialist. But for the most part, his forte was homages of rare and exotic models. Among the exceptions to this were a Yachtmaster (Sailmaster!) and modern Explorer II (Expertimer), both in black and white dials. You'll notice none of your links show a Daytona; that's because he never made one. He also never made an LV Sub. He also put a lot more, borderline nonsensical writing on his dials. On the other hand, he would never put "Date" on a dial that had none. He also never used the word Oyster on a single watch.
Here's a snapshot of his offerings from 2003...
http://web.archive.org/web/20031202030710/...collection.html
By 2004, Panerai really started putting the heat on him to cease and desist his homage operations, and he eventually succumbed, losing a court battle against the Vendome group. Some time later, he introduced a "Hummer" line of watches that mimicked AP Royal Oaks, but their success was limited.
About that time, maybe around 2005, rep factories in China/Hong Kong picked up on the cult status of Ken's previous efforts and began producing their standard rep fare emblazoned with the now defunct RXW logo. Among these were myriad straight copies of current watches, like the modern Daytona, the LV Sub...watches Ken never made.
True RXWs are fairly rare and increasingly collectible. The Chinese versions are inexpensive, found everywhere, and as mentioned in this discussion, on par with another straight copy label, Alpha. Fake RXWs used to litter ebay, but they've cleaned up the cheap ones, because they were blatant rip offs of Rolex. The models that don't get yanked are generally the "real" Ken Trading models. Ken was clever enough to change his designs just enough to thwart the Rolex lawyers (but not enough on the Marina Militares to keep Vendome away).
mcdj