I don't know why those symbols were placed within their respective textures, but they're not for Skyrim, and are bad for immersion.

I've included optional: 'accented' or 'tarnished silver' skins for the Shrine of Julianos as well.
Uses "High Resolution Texture Pack" textures

Manual install only
===
Recommended complimentary mods:
Celtic Enchanting Table
http://www.nexusmods.com/skyrim/mods/3987/?
Celtick Enchanting Table
http://www.nexusmods.com/skyrim/mods/53918/?

===
Also the author of:
Knight of Order voice fix
http://www.nexusmods.com/oblivion/mods/45006/?

Storm Atronach skin
http://www.nexusmods.com/oblivion/mods/45007/?

Flame Atronach female voice
http://www.nexusmods.com/oblivion/mods/45017/?