Serial numbers on the back of each CD. The product is a vintage Adobe Design Collection CD from 1999, which includes Photoshop 7.0, InDesign 2.0, Illustrator 10, and Acrobat 6. It is specifically designed for Mac operating systems and includes English language support. This collection is ideal for educational use and provides a comprehensive set of photo/image/graphic editing tools from Adobe Systems. With this software, users can create and edit images, designs, and documents in a professional environment.