This thing is all over the place: the weight of the C and T don't match the other characters and the curves on the U are uneven. I suspect that it's a freeware font to which a white stroke has been added to lighten it up...

Thanks a lot Nick for your answer. You're probably right about a font mixing and an outline stroke to contrast the font... I would really like to know which these fonts could be, even free. A, R and T are so elegant...