Mechanically and optically in excellent condition. 12v 50w halogen lamphouse and internal power supply working properly. 1.4 NA DIC/Phase Contrast condenser included. Condenser contains 20x 40x 100x DIC prisms, Ph1, Ph4 phase annuli, darkfield, and bright field positions. DIC combining prism with analyzer are in good condition. Objective turret rotates smoothly and clicks at each setting properly. Includes the following objectives: Nikon E 4x 0.10, Nikon Plan 10x 0.25 Ph1 DL(phase contrast), Nikon Plan 20x 0.40, Nikon E Plan 40x 0.65, Nikon Plan 100x 1.25 Oil. Pair of 10x CFW eyepieces. Blue NCB(neutral color balance) and diffusion filters installed. I've included some photos of diatoms imaged with this microscope.