U+0276 Latin Letter Small Capital Oe

The Wikipedia has the following information about this codepoint:

The (near-)open front rounded vowel, or (near-)low front rounded vowel, is a type of vowel sound that has not been confirmed to be phonemic in any spoken language. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɶ⟩, and the equivalent X-SAMPA symbol is &. The letter ⟨ɶ⟩ is the small caps rendition of ⟨Œ⟩. ⟨œ⟩, the lowercase version of the ligature, is used for the open-mid front rounded vowel.

While the IPA chart lists it as a fully open vowel, the rounded equivalent of [a], Ladefoged characterizes it as near-open, the rounded equivalent of [æ].

A phoneme generally transcribed by this symbol is reported from the Bavarian dialect of Amstetten. However, it is phonetically open-mid, [œ].

It occurs allophonically in Weert Limburgish as well as in some speakers of Danish and Swedish. Certain transcriptions of Danish use ⟨ɶ⟩ to denote an open-mid front rounded vowel [œ].

In Maastrichtian Limburgish, the vowel transcribed with ⟨ɶː⟩ in the Mestreechter Taol dictionary is phonetically near-open central [ɐ̹ː]. It is a phonological open-mid front rounded vowel, the long counterpart of /œ/.

Riad (2014) reports that [ɶː] in Stockholm Swedish is sometimes difficult to distinguish from [ɒː], which is the main realization of the /ɑː/ phoneme, a sign that both vowels are phonetically very close.