[1] The half H is found in Latin inscriptions of Gaul, particularly the areas of Lugdunum (Lyon) and Nemausus (Nîmes) in modern France.

Of the variant forms of H found in inscriptions, the reversed half H is the only one commonly distinguished from the ordinary H in diplomatic transcriptions.

There are cases of clear PH, NTH, HI, HE, HR ligatures but, in others, there is visible space between Ꟶ and the previous and following letter.

[3] While the inscriptions show only uppercase forms, a lowercase version has also been entered into Unicode to allow epigraphists to discuss words in appropriate cases.

It is named "reversed" to distinguish it from the previously encoded Claudian letter half H ⟨Ⱶ⟩.