trying not to confuse the issue, but …………………….. in the Grover's 'Art Glass Nouveau' - second printing 1968 - Charles E. Tuttle Co. - they discuss and reproduce images of a glass creation called 'Mother of Pearl Satin Ware (generally known as M.O.P), which apparently came in a variety of surface patterns and colours - with one pattern the States collectors call 'Zipper'. Dates aren't provided for manufacture of this stuff, but presumably it must have been c. 1880 - 1915, probably, and most likely made in the States.
Similar to the appearance of the piece here, the ribs have continuous diagonal/spiral lines, causing the peaks of the ribs to have some vague resemblance to a zip - as in clothing.
The method of making M.O.P. glass isn't straightforward, and I won't quote the book text fully, but needless to say "succeeding layers of glass are acid dipped, and we have Mother of Pearl Satin Ware" …………. "an outer surface that glows with a lustre finish".
Certainly the outer surface of M.O.P. tends to show some colour, unlike the Walsh V.V. which appears to be a non-coloured lustre finish only.
Haven't really convinced myself that the op's vase is M.O.P., but hope one of the States collectors who may know their art nouveau glass will look in and at least tell us the piece here isn't, so we can discount Mother of Pearl Satin Ware, as shown by the Grover's.