𐰽

𐰽	U+10C3D, 𐰽 OLD TURKIC LETTER ORKHON AS

Old Turkic edit

Derived from Sogdian 𐼑 (s, “samekh”), ultimately from Classical Syriac ܣ (“samekh”)

𐰽 (s¹)

A letter of the Old Turkic runic script, representing /s/, used with back vowels.

Clauson, Gerard (1972) “s¹”, in The Origin of Turkic Runic Alphabet, London, pages 70 and 75
Tekin, Talât (1968) A Grammar of Orkhon Turkic (Uralic and Altaic Series; 69), Bloomington: Indiana University, →ISBN, page 27