After years of hyperinflation, Zimbabwe got rid of its currencies in 2009, instead relying on currencies of other nations, primarily the US dollar and South African rand. In October 2016, it began printing its own “US” dollars, colloquially called “zollars,” which were traded 1-to-1 with actual US dollars. On Feb. 20, 2019, Zimbabwe stopped printing zollars and introduced the first currency of its own since 2019, called Real Time Gross Settlement (RTGS) dollars.

The Münzkabinett in Berlin, Germany, has one of the largest numismatic collections (coins and tokens) in the world, and among its more than 540,000 objects are medals, paper currencies and medieval seals. The Münzkabinett, itself, can be visited only for scholarly work; however, thousands of its items are put on display in museums on Berlin’s Museumsinsel (Museum Island).

Until Oct. 27, 2019, one of those museums, the Bode-Museum (www.smb.museum/en/museums-institutions/bode...

The 3-hour “Small Group Spy & Espionage Tour of London” is offered by the company Evan Evans (London, England; phone +44 20 7950 1777, www.evanevanstours.com).

The bus tour is led by a former member of the British government, and it visits the headquarters of British Intelligence sections MI5 and MI6 as well as spots where spies secretly exchanged information. The tour ends at the former home of MI6, St. Ermin’s Hotel, for martinis at the bar.

Tours...