A little piece of medical history…Clay Adams early 1900's Cornell NY A-1604 Prepared Medical Microscope glass Test Slides (25). Subject: mouse. Name “Jim Brown” on sticker on the top of lid. On the side the series listed as “Black Mouse” with numbered slides contents. Please look at all photos for your reference of the items condition. If you have any questions or concerns please do not hesitate to contact us, we are happy to help. Graciously Graced guarantees all the items we sell ensuring that they are in excellent condition. We are proud to offer items in our store that we would be pleased to own or give as a gift. We remain up front and honest giving all details and flaws that we discover. We only sell new and preowned products in a useable condition. All of our items are kept in a clean, non smoking and pet free home office. Thank you for looking…we hope we’re graced to do business with you soon!!