Mother of Pearl Carved Bangle

I apologize for the askew photos....they won’t upload straight like I had them. Anyway, I picked up this beauty at my local thrift store. She’s a Mother of Pearl carved bangle. I have another one that’s a complete bangle as well. I don’t remember where I picked her up but I’ve had her for years. They are so unique. I’d love to try to date these bangles. Some websites suggest Victorian and others simply suggest vintage (40’s-70’s). If anyone has any info on bangles like these, I’d love to know more.