Code point
U+331D
Glyph appearance depends on your fonts.
U+331D
So<square> 30B3 30EB 30CAU+331D SQUARE KORUNA is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+331D
13085
㌝
㌝
E3 8C 9D
331D
0000331D
%E3%8C%9D
\u331D
\u331D
\u331D
\331D