Code point
U+1FDF
Glyph appearance depends on your fonts.
U+1FDF
Sk1FFE 0342U+1FDF GREEK DASIA AND PERISPOMENI is a Unicode 16.0.0 character in the Modifier Symbol category. It belongs to the Greek Extended block.
Choose the representation you need, then copy its value.
U+1FDF
8159
῟
῟
E1 BF 9F
1FDF
00001FDF
%E1%BF%9F
\u1FDF
\u1FDF
\u1FDF
\1FDF