24 kt xmetal xx Second Gen with serial The only reason I am getting rid of them is I wear mine all day ! I got them from a great forum member. Overall 8.5/10 Frame- 9/10 24k parts is near perfect Lens -8/10 one scratch near top of the orbital both side, few small ones but nothing that obstruct vision. Nosebridge - 8.5/10 no need for tuneup Sunglasses and bag only. I will trade for other X-metal XX or x-squared polished ott pit boss maybe other X-metals higher end ones or rare ones..