NEW VINTAGE LOT OF 4 MEDICAL LAB HOSPITAL SPECIMEN MICRO SLIDE MAILER ODDITY

New, vintage, lot of 4, Scientific Products brand, cardboard Slide mailer. Holds two (2) 3” x 1” micro slides. (See photos for details) I am the original owner. It has been in climate controlled for decades. Part of my late father in law’s medical practice. Comes from a pet and smoke free home. Size: 3.125” x 4.25” tall x .25” thick