The lens has excellent clear optics, and is guaranteed. The item "Nikon CFI 20x DL Ph1 Phase Contrast Microscope Objective Eclipse E200 E400 E600" is in sale since Thursday, January 30, 2020. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Objectives". The seller is "clamebake99" and is located in Riverview, Florida. This item can be shipped worldwide.