This is an unusual card and well done if you got it. It was printed in Belgium some time in the 1960s and intended to be issued through Carreras, possibly in Europe, but though sets were produced they were never issued. It measures 66 x 35 m/m.
The reason it is here is because the sixth of the Six Nations is indeed Italy. They seem to be universally known as just "The Italian National Rugby Team", though some people call them "the Light Blues". Italy first started to play rugby quite late, and it appears their first international were inter-Europe matches, in 1911, which led to them being formed into a federation later in the same year. However they did not make their first appearance in the newly named Six Nations until the year 2000.
If anyone knows of any Italian, or for that matter French rugby cigarette card do let us know. Reputedly there are only two French rugby player cards out there, which you can read about at RugbyPioneers