That makes no sense. So there's three CBN201E watch heads.... 300 marked 1 of 300 and 50 marked 1 of 50... yet the straps and bracelets are interchangeable. I can understand 50 straps and 300 bracelets but not the engraving.
The website description of xx/300 & xx/50 does not match the caseback renderings. According to the renderings, it's a Special Edition and there isn't any number engraved. 馃槙
Aquaracer for University of Alabama WBD1110.BA0928
Technically these aren't limited editions. I looked into all this ages ago and these are actually third party mods, there's a website where you can get your College put on your dial, it's nothing to do with TAG directly hence why they don't have different part numbers. Still cool to see them...