Code point
U+337B
Glyph appearance depends on your fonts.
U+337B
So<square> 5E73 6210U+337B SQUARE ERA NAME HEISEI 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+337B
13179
㍻
㍻
E3 8D BB
337B
0000337B
%E3%8D%BB
\u337B
\u337B
\u337B
\337B