it was released by which label?
It was jointly produced by Nunnari and Mark Canton, and Michael B.
300 (film)
"300" was jointly produced by Nunnari and Mark Canton, and Michael B. 
who played the hunchback in the movie 300 UNANSWERABLE when was the movie 300 released? 9 December, 2006.
wiki:23778062
300 (film) [SEP] Production
Producer Gianni Nunnari was not the only person planning a film about the Battle of Thermopylae; director Michael Mann already planned a film of the battle based on the book "Gates of Fire". Nunnari discovered Frank Miller's graphic novel "300", which impressed him enough to acquire the film rights. "300" was jointly produced by Nunnari and Mark Canton, and Michael B. Gordon wrote the script. Director Zack Snyder was hired in June 2004 as he had attempted to make a film based on Miller's novel before making his debut with the remake of "Dawn of the Dead". Snyder then had screenwriter Kurt Johnstad rewrite Gordon's script for production and Frank Miller was retained as consultant and executive producer.