Private Coins In Use In Albaicin, Spain?

I have been intrigued by the following passage in "The Force of Reason" (2005) by the famous Italian journalist Oriana Fallacci:

"...today the quarter of Albaicin is in every sense a State within a State. An Islamic feud, an apostatic domain, which lives with its own laws. Its own institutions, its own hospital, its own cemeteries. Its own abattoir, its own newspaper: La Hora del Islam. Its own publishers, its own libraries, its own schools. Schools that exclusively teach how to memorize the Koran. Its own markets, its own banks. Even its own currency, given that in Albaicin all is bought and sold with the gold and silver coins struck on the model of the dirham in use at the time of Boabdil Lord of the old Granada. (Money coined in the Calle San Gregorio that for the usual reasons of <<public order>> the Spanish Ministry of finance pretends to know nothing about)."

Anyone have any information on these "coins"? Thanks, Skippy