Very nice piece you got here !
Are those the original lenses ?
They look like Grey rather than the Tungsten Iridium Polarized - BiGCoB
They are chrome custom cuts. Trying to source a pair of oem Tungsten if possible. I sold a pair a while back because I had lost hope of ever getting a carbon frame - kicking myself now but happy with the chrome look. If any one can help me out, please get in touch.
edit: they do look quite transparent in the picture so here is one to show them head on with a grey pair above. .