Congratulations for the reverse engineering work and the project to apply the speaker on the case back. I'm sorry you can't find aftermarket replacement glass with the same characteristics as the original; it would have been a magnificent restoration. However, an excellent result, this watch deserves to live for decades to come.
@@TexXasBBQ many thanks dear friend. The glue I used to stick the glass onto the case is indeed a form of flexible epoxy; I think the brand name is Araldit. It comes in two seringe-like cylinders and the mixture takes 5 minutes for it to cure. Stay tuned for more content, friend! 👋🏻👋🏻👋🏻