Grisan,
is the color of your silver screen pink-shifted? Is the aspect ratio about 2.2:1? Is the picture noisy?
If so, I'm quite sure that the french "pyramid" and german silver screen collection share the same master...
But it will be better to have the captures from both, to average noise and drop-outs... would you borrow me your copies, or exchange them with other laserdiscs? ;-)
The next step is coming: stay tuned!