No idea, I think they were there prior to the last street paint job. That area of town is just littered with them, with west princes street having the most [https://goo.gl/maps/vSbD9jFJXBiXmaEQ7](https://goo.gl/maps/vSbD9jFJXBiXmaEQ7) & [https://goo.gl/maps/5azqBd9rDEVwXGMW9](https://goo.gl/maps/5azqBd9rDEVwXGMW9)