You are bidding for a pair of Carl Zeiss PL 10x 20 focussing eyepieces, ZEISS part number: 44 40 32, complete with removable rubber eyecups for the protection of optics. These eyepieces have a diameter of 30mm and are suitable for use with any microscopes such as the Axioskop series, or stereo-microscopes also accepting 30mm eyepieces.
They are in very nice overall condition and have clear, clean and unmarked optics, showing no signs of delamination.
Many thanks for your interest!