According to the closing credits, the interiors of Osman Bey's Palace were filmed at Said Halim Pasha Manor, Turkey.
Was released in the UK as the supporting film in a double bill with I Walk the Line (1970).
Because of some fictitious historical events, the film was banned and never released in Turkey. After 43 years, on 26 May 2013, a digital TV platform broadcasted the movie for the first time ever.
Salih Guney is dubbed by Roger Delgado, plus some bit players are dubbed by Delgado as well.
Tony Curtis received top / first billing, Charles Bronson received second billing, Michèle Mercier received third billing.
Star Tony Curtis presents and introduction and afterword for Charles Bronson's later movie Cabo Blanco (1980) on a 1998 DVD release for that picture. Cabo Blanco (1980) debuted about exactly a decade or ten years after You Can't Win 'Em All (1970) where Curtis and Bronson co-starred.