Nikon Plan 100X/1.25 160/0.17 Oil microscope objective

Nikon Ph2 20x DL 0.4 160/0.17 phase contrast microscope objective

Nikon E Plan 20X/0.4 DL Ph2 Phase Contrast Objective Lens 160/0.17

Nikon Ph4 100 DL 1.25 Oil 160/0.17 Phase Contrast Objective ~ 100x

Nikon E Plan 100 / 1.25 Oil 160/0.17 Ph4 DL Phase Microscope Contrast Objective

Nikon Labophot-2 Microscope E Plan DL Phase Contrast 10x–100x Objectives Japan

Nikon Ph 1 Plan 10x/0.30 DL 160/0.17 Phase Contrast Microscope Objective