Dollar and Pound Signs

Who invented currency symbols? For instance where do the dollar $ and pound £ signs originate?

Cecil Adams on the $ sign:

What does the S in the dollar sign represent?

Encyclopædia Britannica on the £ sign:

From an 1875 Scribner’s Magazine column:

“The dollar mark $ is a combination of the letters f and s, the Spanish fuertes or hard, to distinguish them from paper money. Even among ourselves we frequently hear the term ‘hard dollars,’ so that it is a monogram composed of the first and last letters of the word. Occasionally the calculator abbreviated it thus; fs.; but that interfering with the signs for francs and florins, he curled the s around the f, which preserves the distinction.”

challenging Cecil with your first post?

rather bold.