Etymologies for some slang terms for money, mostly British. Wonga?
Possible designs for Hungarian Euro currency, beautifully irrelevant at the present time.
A Warhol silver certificate sold for $32.8 million, not through Lyn Knight. See also this article in CoinsWeekly. I know, when I look at Warhol's stuff I too think I could make this stuff easily. P.T. Barnum was right--
Russian court bans a local currency backed by potatoes. A video is here. For several reasons vodka might make a superior backing.
How the Greeks might introduce a new currency in a pinch, with some lessons from Iraq. "A currency is a national business card." Simply printing more Euros would be illegal. Companies are gearing up to issue private currencies.  Here is a discussion (a bit old) from The Economist on the economics of scrip.
A discussion of women on currency, in the New Yorker.
Video from the 2015 Memphis Show, from CoinWeek. Pierre Fricke appears at 4:59, discussing a Jules Manouvrier note.

Making sure forthcoming British polymer notes are real.

Fake Hong Kong notes with unusual serial numbers.
“For God’s sake what are you doing with $700 million in your home?”
Counterfeiting revenue stamps in Bangladesh.
"Her friends said she was a person of high morals."

The Northern Ireland chapter of the Banknote Book, via Banknote News.

"Alexander Hamilton: The Formative Years", at the Museum of American Finance, July 10, 2015

The Sixth International Scientific and Practical Conference on Security Printing Watermark Conference-2015, Sochi, Russia September 22-24, 2015.