You have me thinking now! I have a friend who is manageress in a major high st optician if this isnt a major job i could get it done no problem. My concern now is if i want to risk screwing up my Joshua Breitling Nav by having someone take the crystal off to get the job done. Also my guess is the Optician has no idea what a Breitling Nav is let alone how much AR coating it should have.....(Can't say i know myself) So it sounds a good idea in the first instance but wondering now if i could end up with a watch less like the original than i already have by the optician puting on too much ar coating. Looking forward to hearing how Mr Guinea pig (iluvspl) gets on with his before i decide to take the plunge.