Some rough pic quality grades (as far as I can remember):
My Dear Killer (1971) 6-7
Night Train Murders (1975) 6-7
Oasis of Fear (1971) 6
Phantom of Death (1987) 5-6
Strange Vice of Mrs. Wardh, The (1971) 6
Strip Nude for Your Killer (1975) 6
Torso (1973) 6 but audio problematic
Watch Me When I Kill (1977) 5-6 best release though
What Have They Done to Your Daughters? (1974) 6-7
Who Saw Her Die? (1972) 6-7
Footprints (1975) 5-6
Designated Victim, The - Fan Edition (1971) 6
Maybe ask some others as well as my memory is so-so...
