This is a retail version of MS Office Premium. It was given to me in a box of other software. The original license key is on the back of the CD case, but I have no way of telling if it was installed/uninstalled previously. Everything is in excellent condone and the CDs look pristine. It should work on Windows 95 and later.
Being sold as is - used vintage software. I have no idea if it will install.
Please let me know if you have any questions.