My mtb was built up to a frame like this. I have the original frame sticker somewhere in the garage. It says that it was made from Ritchey Logic Super tubes (if I remember well). It is chromoly steel, but from it's colour everybody thinks that it is made from titanium. Some years ago mine was powder coated with uncoloured lackquer, but it has some rust spot on. Unfortunatelly, I can't remove the lacquer with any solvent, and to polish it will lasts some night... :-(
