In the opening, Steed's using a Targeteer Beer Can Launcher. The launcher used .22 blank cartridges to send beer can up to 120 ft. They became less anachronistic when beverage cans switched from sturdy steel to lightweight aluminum.
I The name of the shoemaker, Piedi, is Italian for 'feet'.
This episode contains 3 actors who were in Bond films; Eunice Gayson (Lucille Banks) played Sylvia Trench in both the first and second films, Dr. No (1962) and From Russia with Love (1963). Diana Rigg (Emma Peel) played Tracy Vicenzo in On Her Majesty's Secret Service (1969), and Patrick Macnee (John Steed) portrayed Sir Godfrey Tibbett in A View to a Kill (1985).
The close-up of the belly-dancer's snake tattoo, prominently displaying her navel, would never have been allowed on American television of the 1960s.