You request is placed on a forum for users of Mathcad and Prime. I you want something from PTC you will have to contact their support. But I doubt they will fulfil your request, considering:
Even if you had an uncorrupted Mathcad 14 CD, you will probably not be able to get it installed AND licensed.
(As you already found out: https://community.ptc.com/t5/Mathcad-Installation/reinstall-Mathcad-14/m-p/924354#M3566 )
Success!
Luc