Windows Server 2012 build 8508

Windows Server 2012 build 8508 is an RTM escrow build of Windows Server 2012 that is referenced along with its client counterpart in  in build 8513 through Windows 8.1 build 9448. It is also referenced in a WinJS 1.0 string found within the Windows Store infrastructure.

cversion.ini
[HostBuild] MinClient=8508.0 MinServer=8508.0