| Added by |
 Bart Perdieus
|
| General Description : | The Calculus Affair (French: L'Affaire Tournesol) is the eighteenth volume of The Adventures of Tintin, the comics series by Belgian cartoonist Hergé. Professor Calculus has invented a machine capable of destroying objects with sound waves, which gets the attention of the Bordurian secret services, and it is up to Tintin and Captain Haddock to help him. Some, such as Benoit Peeters in his book Tintin and the World of Hergé, consider this as the greatest and most "detective-like" of the whole series. The story is set in the 1950s, several months after Tintin and his friends have returned from the Moon. |
| Face value | 0,46 Euro |
| Catalog code (Michel) | BE 3702 |
| Catalog code (Scott) | BE 2234s |
| Catalog code | Yvert et Tellier BE 3637 Stanley Gibbons BE 4085 Belgium BE 3654 WADP Numbering System - WNS BE054.07 Unificato BE 3646 |
| Series | Hergé 1907-2007 |
| Stamp colour | multicolour |
| Stamp use | Mini-sheet stamp |
| Print run | 824.804 |
| Issue date | 19/05/2007 |
| Designer | Hergé |
| Print technique | Offset lithography |
| Perforation | 11 1/2 |
| Height | 48.75 mm |
| Width | 38.15 mm |
| Catalog prices | No catalog prices set yet |
