Published in The Victor #149-#151, 12/28/1963 - 01/11/1964.
The enemy nation of Krania is flooding Europe with near perfect forgeries of £5 notes as well as other currencies. 'J' Branch has learned the man who made the plates so it just falls on Mark Strong to find and destroy the actual metal. To get into the country he must take the place of that country's exiled greatest violinists.