4 ms·

And going back a little further, I believe it was "System 7.5.5" etc. until Mac OS 8.5 or so?

• fzzzy 5mo ago
  I think Mac OS 7.6 was the first to have the branding
  • gnerd00 5mo ago
    the "two face" logo.. the reference was, the logo could be a single face, or a face in the distance with a second as profile in front. IIR
    • flomo 5mo ago
      Reflection of the happy user's face on the monitor, engaging in pleasing human-computer interaction.