New Nikon Phase Ring D-C Ph1 Dry 0.25 to 0.5 N.A. for the Universal Condenser System, to be used in conjunction the Nikon E400, E600, E800, E1000 and Nikon TE200/300 inverted microscope.  The Annuli Ring is absolutely new condition having only been removed from packing to photograph. The old Nikon number is 93605 and new number is MBH70210 with a current list price of $80.00.