>>15091000
>Qoppa
Koppa or qoppa (ฯ, ฯ; as a modern numeral sign: ฯ) is a letter that was used in early forms of the Greek alphabet, derived from Phoenician qoph (๐ค). It was originally used to denote the /k/ sound, but dropped out of use as an alphabetic character in favor of Kappa (ฮ). It has remained in use as a numeral symbol (90) in the system of Greek numerals, although with a modified shape. Koppa is the source of Latin Q, as well as the Cyrillic numeral sign of the same name (Koppa).
https://en.m.wikipedia.org/wiki/Koppa_(letter)
So it wasn't the SS? It was the QQ?