Vintage Microscope Prepared Slide Lot Animals Vegetables Plants Pollen Spores Micro-Organisms. 2 slides are missing out of the boxes and there is one extra slide that is slightly longer with a metal slide cover that is included as well. Zoom in on all pictures to see condition of the slides. These slides have been sitting for decades and microscope slides do deteriorate over time so these are more for display or for props in a movie or play.