Baccarat used only paper labels from 1860 until 1936 at that time Baccarat began marking all of its works via acid or sandblasting. Prior years to 1860 I do not believe their pieces were marked at all. I do not recognize this vase as a piece I have seen (shape) from Baccarat but by 1970 perfume bottle production was over 4000 bottles per day, So They have produced enormous amounts of glass and this very well could be Baccarat, The quality of the glass would have to be perfect and would need a hands on in my opinion to be sure unless you found your piece in company documents. Very pretty piece!!