I celebrate your post. I include a picture of my collectables which happen to match by color. These two specimens define each one of their brands for life.
My wife’s says hello to yours - (can’t restrain myself from wearing it ) Just between us and jokes aside, not sure My wife realizes how much I bought her this one to feed myown eye. The only way to watch two beloved ones together.. LOL Enjoy them both.
Looks super original from here! Having COA will do you nothing on a daily basis since its all about the Blue guilloche - but at resale if ever; Certificate WILL make a difference.