The reverse side features another message to students. Dimensions: About 15 inches wide x 21.25 inches tall. Rarity: I've owned this since about 1991 when I picked it up at my university's Apple store. Ive never seen it listed in a search and presume that it is very rare on that basis. This could be a pretty unique artifact.
Well-traveled and loved for many years as it accompanied me on my academic journey. E bay member since 1999.