Dublin Road Sign Hat Pin – On the road to Dublin! Do you love Ireland? Then this is the pin for you. During our many trips to Ireland, we always loved the quaint road signs. So we decided to make hat pin versions! Dublin Road Sign Hat Pin. Awesome pin to put on your flat cap (scally cap), or lapel or wherever you might want to wear it! If you are a lover of all things Irish, (or just love cool pins for your scally cap) then THIS is the pin for you!