Well,, that helps a lot !! Makers in France did make several different types of fire grenades that are different from ours in the U.S. !! The excessive air bubbles do make me think that they may be repro`s !! The bubbles in modern glass are done as a decorative element !! And when I say modern I am talking about most of the 20th century !! Hand blown glass should have a few scattered bubbles but I have only seen the excessive amounts after about 1980 or so !!
And I forgot to ask if you are in the U.S. ??
https://www.ebay.com/itm/Vintage-Style-Hanging-Glass-Tabletop-Hydroponic-Flower-Vase-With-Wood-Tray/302915807594?hash=item468730696a:m:muadlRqs6A6a47rNcAKZrVA
Another option !!
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