Board Thread:General Discussion/@comment-60.240.118.7-20150105090527/@comment-5284880-20150424235533

Here's my guess.

T = Tessarect (Space Stone)

H = Head (Vision's Third Eye/Soul Stone)

A = Aether (Reality Stone

N = (possibly) Norn Stone (Time Stone)

O = Orb (Power Stone)

S = Scepter (Mind Stone)