Serial for Windows: MTWE50-103520-99U7T
Serial for Macintosh: MTME50-180198-TUMUX

See also: [MathType 1 & 2][1], [MathType 3][2] and [MathType 6.x][3]

Compatibility
Architecture: PPC PPC (Carbonized) x86 (Windows)

Mac OS 9 or Mac OS X 10.1 or newer
20 MB free hard disk space
4 MB of RAM (12 MB if used with Microsoft Word)
CD-ROM for installation (not required if product is downloaded via the
Internet)

  [1]: http://macintoshgarden.org/apps/mathtype-151
  [2]: http://macintoshgarden.org/apps/mathtype-3
  [3]: http://macintoshgarden.org/apps/mathtype-6x