An old (formerly used) synagogue building in my town has this sign on the front of it:
The text says "Shaaray Torah", the name of the congregation, but what is the meaning of the two qofs above it?
Likely, it is an acronym for קְהִילָה קְדוֹשָה k'hila k'dosha (lit: holy congregation), a title for Jewish communities whose use dates back to the Talmud (Tamid 27b).