Find Your Sitecore Version Number Without Logging into the CMS

If you ever need to find your Sitecore Version number without logging into the CMS, you can browse to the /sitecore/shell/sitecore.version.xml file.

Of note, you can also check your applied hotfixes. These will reside in the /sitecore/shell/hotfixes directory.

Review the following for full details: https://kb.sitecore.net/articles/891209