The Adventures of Tintin beginning in 2006 with "Tintin". It was a set of six different euro coins honouring Hergé: three 1½-euro silver coins featuring Tintin and the Professor, Tintin and Captain Haddock, and Tintin and Chang; a €10 (gold) featuring Tintin; and a €20 (silver) and a €50 (gold) featuring Tintin and Snowy. In 2007, on Hergé's centenary, Belgium issued its €20 (silver) Hergé/Tintin coin. During Hergé's lifetime, parodies were produced of the "Adventures of Tintin", with one of the earliest appearing in Belgian newspaper "La Patrie" after the liberation of the country from Nazi German occupation in September 1944. Entitled (""Tintin in
The Adventures of Tintin of heart: it is packed with close textual analysis and laden with psychological jargon." Following Apostolidès's work, French psychoanalyst Serge Tisseron examined the series in his books "Tintin et les Secrets de Famille" ("Tintin and the Family Secrets"), which was published in 1990, and "Tintin et le Secret d'Hergé" ("Tintin and Hergé's Secret"), published in 1993. The first English-language work of literary criticism devoted to the series was "Tintin and the Secret of Literature", written by the novelist Tom McCarthy and published in 2006. McCarthy compares Hergé's work with that of Aeschylus, Honoré de Balzac, Joseph Conrad, and Henry James