Kickstart 1.3 (Revision 34.5) was released in 1988 and is arguably the most iconic version for the Amiga 500. While later versions offered better features, 1.3 is famous for three reasons:

For many, the simple image of a hand holding a "Workbench" floppy disk is the defining visual of 1980s computing. How to Legally Download Kickstart 1.3