1940s Sterling Silver Brooch Blue Red Glass Stones GLOWS! Hard To Find READ READ

  
The blue stones on the brooch glow. The blue stones on the earring do NOT glow. There is a slight bend in the pin backing- see photos. I believe this is an Eisenberg brooch.

There is a mark on the back. However it looks more like an H than an E to me.

I have seen other brooches on an online authentication site in a golden color that were stated to be Eisenberg.