I too was going to chime in with "John Player Special", not just a cigarette but also a Formula One race car...This is a very strange frame! Clearly a Cinelli SC BB shell, but it's been (slightly) re-worked, and those stay caps are highly unusual...never-the-less that bridge reinforcement is a Pinarello product, or a careful counterfeit...and why would anybody???
Yes, It's SLX...I'm going to guess it's from Argentina...why not?
Last edited by unworthy1; 10-31-14 at 10:03 PM.