Not for everyone's taste, and certainly my boss said it must be an acquired taste, the salted licorice flavour is quite salty. Avoid too, if you are on a low salt program. Eat in moderation.
I find double salt licorice interesting, and remember eating them, enjoying them, when young; I also like eating hard-boiled eggs with lots of salt, too. Well, salted nuts might be as salty. These taste like I remember. Oddly enough, I found these in Canada, my boss couldn't find them in the Netherlands.
They are authentic, they have the "DZ" for "Dubbel Zoute" on each piece.