u/Upstairs_Command

Hello, one of my coworkers has an old Radium Spa sitting high up on shelf with no cover on it (I just put aluminum foil over it). We briefly walk pass it everyday for the past year without realizing it... no one noticed it or would have thought "hey be on the look out for a radium spa from the early 1920s in our back rooms"... it looks like pottery for a plant. I only figured out what it was when I was cleaning the top shelves and read the label on it...

My big question is to what extent are they dangerous when stored like it was and how safe is it to leave it there now?

edit: I told my coworker what he had, how old/somewhat rate it is, now he's wondering how much it's worth lol