I noticed someone selling an alleged G-2000 G-Shock on "that auction site" (# 150713735014). Immediately I noticed that the face didn't look right. Fortunately the seller provides hi-res photos. I trimmed down and resized a couple to show you:
So, you can see the case back and bezel are definitely from a G-2000. But the module and dial face are certainly not. The bezel looks a little peculiar, like it's not fitting 100%, if you take a look on the left side of the dial (like part of the bezel inner edge sticking out). The LCD digits look a little "off" for what I normally expect to see on a Casio. Also, check out the backlight. I don't recall seeing one with the color pattern like this. Can anyone here identify the donor watch that might have been used for the module and dial in this franken-watch? Or perhaps, someone took a real G-2000 case and stuffed a knock-off module and dial inside it?