I don’t understand why OO is in the title of this thread. But now that we’re on the topic…
Panda licorice is from Finland and the box just has a plain “K.” The company has a document indicating that it is under supervision from the Finland’s chief rabbi, who is a YCT grad. I’m not on the OO boat in general, but I think this hechsher is good enough, since it’s a very simple product (with just four ingredients, all vegan and non-grape), and I doubt this humble product is fit for a king’s table.