Both Duccio Tessari and Gustav Machatý worked what professions? 
Duccio Tessari: Duccio Tessari (11 October 1926 – 6 September 1994) was an Italian director, screenwriter and actor, considered one of the fathers of spaghetti westerns. Gustav Machatý: Gustav Machatý (9 May 1901 – 13 December 1963) was a Czech film director, screenwriter and actor.
director, screenwriter and actor