Thanks for the pics on the link!!!! You maybe right maybe they did change later on but the bloke who sold these new years ago said they were multi coated and on the box it says about the 15 layers of ruby coating so i am not sure now??? The 3-9x40AO i have has the slight blue tinge to the picture you talk about where as the 4-12x40AO doesn't but both are crystal clear!!!!