ϒ
See also:
Υ
and
υ
ϒ
U+03D2
,
ϒ
GREEK UPSILON WITH HOOK SYMBOL
←
ϑ
[U+03D1]
Greek and Coptic
ϓ
→
[U+03D3]
Translingual
Letter
ϒ
curled capital letter
upsilon