I have noticed a circular mark ( not a scratch) on the face my Formula 1 series 3 model. Could this be a mark on the AR coating ? Can it be rectified ?

Thanks

 

Formula One series 3 is too vague, can you give the exact model number, and pictures would help. From my personal experience: if it is on the outside coating on the crystal, you're stuck with it unless you either polish it a little bit, with the risk you will mess it up more, or polish off all the coating, problem solved.

 

I only have this picture. I don't even know if my watch has AR. I am not sure if there is a way of finding out.

 

WAC1111.
Tto my knowledge, 99% sure as I don't have the watch here, no AR coating on this watch.
Try polishing the crystal with some tooth-paste, just mildly, and check if the mark dissappears, the crystal is Sapphire so it shouldn't make any marks on it.
Succes!

 

Pretty sure you are correct with the WAC 1111 http://www.watchfinder.co.uk/Tag Heuer/Formula 1/WAC1111-BA0850/2139/item/35957

Its an odd mark just a almost perfect circle, that only shows in certain angles of light..I will try the toothpaste method. Thanks

 

You're welcome!