For starters you should know that Eterna makes all the watches for Porsche Design. So it seemed pretty clear that this was a deliberate move, meant to erase the history of the KonTiki Diver! If you compare the two watches, the Porsche Design P'678 Diver is a bit more simple, streamlined, and hopefully a bit less expensive. The KonTiki Diver retailed for bout ,000. Though it had a ton of cool technology. The complex titanium case flipped out of a cage for winding and for a new position on the wrist. It just felt totally space age. Also, you needed to pull out the inner case so as to move the bezel - that while you operated from the outside, turned on the inside. Powering the the 1000 meter KonTiki Diver watch was an automatic ETA 2897 movement with the time, date, and power reserve indicator. It was pretty kick-ass. So what happened? Well apparently Eterna didn't sell a lot of them. According to them, the watch "didn't fit into the brand." Most people don't really know about Eterna, especially in the US. If they do, they likely have some vague concept of the brand's merits, even though it is a great brand. They actually started ETA before selling it to the Swatch Group.
See Cartier watches on eBay here.