In colorless glass pressed in a mold, matt and shiny satin,
The cup is signed Lalique France on the bottom.
There are two obvious chips along the top edge, see the last three photos.
For more details: https://www.dropbox.com/scl/fo/iz0p7vmmn095j1ho7xh4s/h?rlkey=fh1sbd9g69empgrdul08vo0u7&dl=0