Code point
U+319A
Glyph appearance depends on your fonts.
U+319A
So<super> 4E59U+319A IDEOGRAPHIC ANNOTATION SECOND 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+319A
12698
㆚
㆚
E3 86 9A
319A
0000319A
%E3%86%9A
\u319A
\u319A
\u319A
\319A