I have a definite possible maker for this vase - Les Frères Boutigny, Paris 1880-1890. Reference: The Art of French Glass 1860-1914, Janine Bloch-Dermant, page 14 plate 6.
The vase shown is the same shape as mine also overshot crackle. She calls it crackle but has an asterisk next to it along with a description of overshot glass and the body of the vase looks exactly like mine so I believe it was created via the overshot process as mine was.
Height of that vase is 23cm (mine is 24cm with the vertical pulled up rim), and it looks as wide and as big as mine, i.e. proportionately it looks similar. The rim is the very deep drip rim in blue but instead of having the upstanding pulled vertical zig zag it has an applied rigaree in the same blue around the rim. The feet are three pulled blue feet kind of wishbone type but not exactly, pulled with a tool to create the foot. The feet do not go over and round the whole base as mine do, but are just three applied singularly.
However, despite these differences, I am 99.99% convinced mine is from the same source.
According to the book Les Frères Boutigny were active mostly in Paris between 1880-1890 and 'Collectors of the old glass of Bohemia and agents for that nation's modern crystal, they tried to imitate the antique work, even to the perfection of the process of double-layering (casing) glass in different colours. ..... Often the Boutignys' glass is crackled, and the crackled vase now in the Conservatoire des Arts et Metiers displays a quality of material a strength of form all but equal to the audacious work of Auguste Jean (plate 6)'.
It is of course possible, that my vase is one of the 'antique work' they tried to imitate and the implication in the sentence above is that the antique work they imitated was Bohemian, but my instinct says that it is from the same source as the vase pictured plate 6 and is by Les Frères Boutigny.