1912: 1st Italian Championship in Santa Lucia, Napoli

The Italian men's Water Polo Championship in 1912 was the 1st official edition. The tournament was organized by the then Federazione Italiana Rari Nantes  and was disputed in Naples September 14, 1912, in the stretch of sea facing the harbor of Santa Lucia. The tournament was played by three teams Genoa, Rari Nantes Partenope and Società Podistica Lazio. The ligurian team won the first National Italian title.

Source: private collection 

1945: The team of S.S. Lazio Nuoto

The team of S.S. Lazio Nuoto, winner of the 1945 Italian Championship. It has been the first post-World War II Championship not recognized officially by the Italian Federation for technical reasons. Standing L-R: Ivo Bitetti, Gozzo, Catalani, Tamagnini, Aldo Ghira, Franco Baccini Squatting L-R: Camillo De Giovanni, Caselli, Gemignio Ognio.

Source: http://www.sslazionuoto.it/

Action at the Tokyo Metropolitan Indoor Swimming during the final game between Hungary (blue) and USSR (5-2) for Tokyo 1964 Olympic Games 

1935: Drawing by Jean Jacoby

Poster "Grande Fete Internationale de Natation" by Jean Jacoby (Luxembourg - Sport & Olympic artist) in 1935