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 of the client counterpart through to Windows 8.1 build 9448.

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