I have a copy of Office 2011 which was part of a package purchased for a group. I have the product ID number but not the key. I had to buy a new hard drive for my computer and now cannot use Office.
If you can still access the old harddrive and office is still activated on it, you could probably run an extraction program which would.. extract your key for you.
I've never used any of these before so I'm not much help beyond this point..
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