Code point
U+319B
Glyph appearance depends on your fonts.
U+319B
So<super> 4E19U+319B IDEOGRAPHIC ANNOTATION THIRD MARK is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Kanbun block.
Choose the representation you need, then copy its value.
U+319B
12699
㆛
㆛
E3 86 9B
319B
0000319B
%E3%86%9B
\u319B
\u319B
\u319B
\319B