...I joined after looking for information that could help you.This is what I found when searching for "Descollognes Freres":http://db.ipohworld.org/view.php?type=id&id=7822It isn't your bottle but it strongly suggests that "Descollognes Freres" made perfumery ingredients, doesn't it? That gives you a start in assessing your bottle, and I wish you luck in your research.