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#41
In an elevated command prompt, type slmgr /dli (or slmgr.vbs -dli) and it will tell you - most likely Retail license.
How to know the Edition, Architecture, Channel and build of Windows 10 - Microsoft Community
However, read the link posted above:
Is that enough of an official statement from Microsoft?When I upgrade a preinstalled (OEM) or retail version of Windows 7 or Windows 8/8.1 license to Windows 10, does that license remain OEM or become a retail license?
If you upgrade from a OEM or retail version of Windows 7 or Windows 8/8.1 to the free Windows 10 upgrade this summer, the license is consumed into it. Because the free upgrade is derived from the base qualifying license, Windows 10 will carry that licensing too.
If you upgrade from a retail version, it carries the rights of a retail version.
If you upgrade from a OEM version, it carries the rights of a OEM version.