Imperial Hand Painted Bamboo Glassses

Greetings Tiki Peeps, I have a set of glasses that were made by Imperial Glass that aren’t like their typical glasses. These are hand painted. IG had many iconic glasses used by Tiki Bars but I’m unable to find any info on this pattern and thought maybe someone here would know. Thinking they made these as a request or reaction to their tiki popularity? Were these part of a bar’s offerings? They are listed in the IG encyclopedia as bamboo not Bambu.