Meisenthal ceased production in 1969, but I'm not sure it ever was a cristallerie.
Could also have been made for the Crédit Mutuel, of course....
there seems to be a huge difference in factory production practice between a verrerie where they make sodalime glass, and a cristallerie where lead crystal is produced. And it seems to be an either/or choice - few factories produce both (at least not at the same location).