If its just the lack of Aquaracer on the dial that you wonder about, I think calibre11's post in this thread might bring some clarity and confirm it aint anything to worry about
https://tagheuerforums.com/threads/early-aquaracer-automatics-wab2010-wab2011.18724/
Searching the forum you also find at least one more member who has posted a wab2010 without the word Aquaracer on the dial.
Google shows me that replica sites seem to sell these for about 150 dollars, no Aquaracer on the dial. I know too little about these models to speak of the authenticity of the one you posted. But if you're considering buying it, buy the seller first and if it seems like a deal too good to be true it probably is.