Following up to an old thread, I found tonight that I indeed did have a non-CSS protected (unencrypted) commercial DVD. In fact it is double sided, one side NTSC and the other PAL.
The title is "Salach Shabbati", and the bar code is 7-294276-277140.
It says, in Hebrew, that one side is PAL for Israel and Europe and the other is NTSC for the US.
It was released in 1964 and was nominated for an Oscar for best foreign film.
Geoff.