u/Lanky-Piano-5402

My grandaunt in Edinburgh passed down this lucky bean pendant to me that I wear every day now. I have pictures of her wearing it in the 1950s when she was a teen, and it was passed down to her from her mother. She wasn't sure if it was bought by/for her mother or grandmother.

Any idea of how old this might be? RJ and 9CT are the only markings on the back. It's about 18x10 mm