The on screen credit for Nights in Black Leather (1973) is subtitled "Ignatio Rutkowski, director," but the credited director for that film is Richard Abel (as Ignatio Rutkowski).
During one of the shots of Peter Berlin walking the streets of San Francisco, his voiceover describes himself as sixty years old. At the time of filming in 2003 and 2004, he was 59 and 60 years old, when the film was released gradually in 2005 and 2006, he was 61 and 62 years old.
During what is ostensibly one contemporary scene in Peter's San Francisco bedroom, talking about his mementos, alternately Peter has a thin mustache, and then is clean shaven.
When showing the black and white still photo of young Peter with his parents and brother, the camera pans up and focuses in on Peter's brother, not Peter himself. Peter is actually the boy on the far right of the screen.