Neutral Yer

letter of the Cyrillic script representing archaic Ь or Ъ when ambiguous

Neutral Yer (Majuscule: , Minuscule: ) is used to transcribe Ь or Ъ when it is not possible to tell the difference in a manuscript.[1]

Appearance change

It has the appearance of Yer, with a hook at the top of the stem. In some fonts it appears identical to Ъ.