The caption clarifies that it was made until the mid-1930's (it was removed from the 1937 catalogue) and never re-introduced later. The signatures are hard to read and photograph, as one must look at the base under bright light. They are R LALIQUE in raised block letters under the base and " Lalique France" etched manually (photos 8,9). The latter signature, which was the rule until 1914, was usually added to ulterior pieces when the molded signature was not completely legible (from Marcilhac page 210).
The condition is very good: No chip, break or even visible scratch. The patina remains mostly even with very few irregularities, occasionally some incrusted dirt.
For a vase of this age, it is in better shape than most. The item "Rene Lalique 1920 Frosted Gui Vase with Light Lime Green Patina. VG" is in sale since Friday, October 1, 2021. This item is in the category "Pottery & Glass\Glass\Art Glass\French\Lalique".
The seller is "hardweejun" and is located in New York, New York. This item can be shipped worldwide.