Right, I bought it. It's a full 50ml splash bottle of EdC with a red silk bow attached to the neck, comes with a little gold cardboard presentation stand and a clear plastic box/lid, and judging by the packaging and the tags, I'm guessing it's a 50's/60's-era formulation. This
is similar, but not exactly the same (mine never came with talcum powder, obviously, and there are slight differences in the bottle and presentation). I paid about 15$. I will try to take a few photos in the next few days.
The similarity to N° 5 isn't as great as I thought, although the opening and basenotes really are very similar. Overall, L'Aimant seems softer, warmer and less austere than N° 5 to my nose, and I think it will turn out to be much more wearable for me. Also, the sillage and so far the lasting power of vintage L'Aimant EdC is more or less equal to vintage N° 5 EdP - quite impressive! I'm very pleased with it.