129E1
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=19726931&linkID=12305695
Another option:
1 Using your installation media, (USB key, DVD, download folder, etc.) navigate to the location of the setup.exe file for your Autodesk product.
2 In that folder, look for a file named MID.txt, MID01.txt, MID02.txt or some variation on that name.
3 Open this file in notepad and verify that the product name is what you expected it to be.
4 The first five characters of the part number should also be the product key for that product.
See this solution.
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