What is the Windows 8.1 DVD Label?

I am trying to find the DVD I burned to install Windows 8.1. I have several. After screwing around with the various DVD’s, trying to figure out which one is the latest.. Google was no help. Bing was no help. The Duck didn’t know..

So, here is a post so that the next time I need the original DVD, I can know that the the

Windows 8.1 DVD label is: IR1_CPRA_X64FREV_EN-US_DVS

This also may be helpful, too: EULAID:WinBlue_R8_1_ED_PS_V_en-us. It is mentioned during the install process.