Mr. Schaffer decided to reply directly via email.
Found his email this morning, upon waking up. Useless to try and describe what he told me and what I feel.
Let’s just say that he is willing to help me.
For now, an exclusive present of his to us: the original sticker that was affixed on each receiver of the original SVDS unit. You can barely see a round circle in pictures of the original SVDS, on the left side of the receiver looking at it from the front.