Sunglasses 1: Scratches on the lenses. Often used but still in good condition :) 
Sunglasses 2: Aviator-style sunglasses. A few scratches on the lenses. Often worn 
Sunglasses 3: Sunglasses with blue reflections in the lenses. Often worn, so a few small scratches on the lenses but also still in good condition ;) 
Sunglasses 4: Scratches on the lenses because they’ve been worn already, but good condition.