I believe yours is possibly one of many commercially imported bottles up until 1939 by U.S. importers such as, Irving Rice, the Koscherak Bros. & Paul Straub Inc. as well as numerous smaller importers. These were imported by the thousands, made by numerous Czech firms & 98% of them are not Schlevogt, Hoffman, Lalique, etc. Also during the period 1941 to 1945 several U.S. firms began producing reproductions of Czech bottles, Silverbrook Art Glass Co., Cavalier Glass Co., American Cut Crystal Corp., Block Mfg. & Edward Paul Co.. These bottles were largely manufactured using European craftsmen already in the U.S. glass industries. Yours is of that type of commercial bottle.
Why Lalique appears I would not venture to say beyond the fact that Lalique did manufacture commercial bottles for other concerns which are considered separately from Laliques "own" bottles as far a value goes. It may be one of their commercial bottles or a Czech bottle embellished by a private party who added the signature. In all likelyhood you will need to find someone very knowledgable who knows exactly what Lalique manufactured for other companies to find if its legit. Sorry I cannot add more.