This film was released 50 years after the death of the real Arturo Porcuna.
Arturo Porcuna died two years after Asiong Salonga, another Filipino gangster who was previously portrayed by ER Ejercito on screen.
ER Ejercito was born in the year 1963, the year in which the real Arturo Porcuna died.
Contrary to what was portrayed in the film, Baby Porcuna, the sister of Boy Golden, wasn't killed in a shoot out. She was still alive during Boy Golden's demise and outlived his brother several years more.
According to an article from Manila Chronicle Arturo Porcuna aka Boy Golden and 2 other men was shot in his apartment and not in a bar.