- Script
- Hergé (credited)
- Pencils
- Studio Hergé
- Inks
- Studio Hergé
- Colors
- Studio Hergé; Guy Dessicy ?
- Letters
- Studio Hergé
- Genre
- aventure (adventure); humour (humor)
- Characters
- Tintin; Milou; Haddock; Professor Tournesol
- Synopsis
- Tintin, Milou, Haddock foil a Cold War attempt by Borduria to steal Tournesol's new invention.
- Reprints
- from Le journal de Tintin (Le Lombard, 1946 series) #51/1954, #14/1955, #15/1955, #51/1955, #4/1956, #8/1956, #v10#6/1955 (9 février 1955), #v10#12/1955 (23 mars 1955), #44/1955 (2 november 1955)
- in Tim und Struppi (Carlsen Comics [DE], 1967 series) #[10] - Der Fall Bienlein
- in Tintins oplevelser (Illustrationsforlaget, 1960 series) #10 - Det hemmelige våben (1964)
which is reprinted- in Tintins äventyr (Illustrationsförlaget, 1968 series) #10 - Det hemliga vapnet (1968)
which is reprinted- in Le Avventure di Tintin (Gandus, 1977 series) #[2] - L'Affare Girasole ([1977])
- in Tintins opplevelser (Allers Forlag, 1978 series) #8 - Det hemmelige våpenet (1979)
which is reprinted- in Tintins äventyr (Bonnier Carlsen, 2004 series) #18 - Det hemliga vapnet (2005)
Studio artists involved include Herge, Bob De Moor, Jacques Martin, and Roger Leloup.