Daily Mini-Quiz
The answer to today's Daily Mini-Quiz is the German letter, the Ezsett.
It has just been officially recognised by the International Organisation of Standardisation (ISO), as a lower and upper case figure of the alphabet.
This ruling comes as a setback to moves in Germany to scrap the Ezsett from the alphabet because it takes up the space of a capital letter.
Its use has been in decline in recent years and is often replaced by a a double S. It has already been scrapped in Swiss German.