Macintosh system disk 6.0.8 800 K (start up)  It is a copy, from abandonware, no license necessary.

Double Density diskette (800 K) for Macintosh with system 6.0.8. (English)
Start up your Mac with the most suited operating system for Apple Macintosh Plus, SE and Classic.

Suited for : Mac Plus, SE, SE FDHD, SE/30, Classic. Does not function on Mac 128K or Mac 512K.