The Whitman book is good for a lot of colonials but not for Hibernias in my opinion. There are hundreds of varieties but the Whitman book kind of compresses them into a few categories. The only source I know of to accurately Id them is Syd Martin's book on the Hibernia series. It can be quite a chore to ID these even with the book, but I may be able to give it a shot this evening.
I just dragged out my Whitman book to look this up for you. I also just realized your coin has two dots, not one as I had thought at first glance the other day. According to the Whitman book you appear to be W-13120 11 strings on the Harp and dots after Hibernia and the date. Martin describes 127 varieties within this genre so you will need to access the Martin book to go deeper into the variety.
"Suppose you were an idiot, and suppose you were a member of Congress. But I repeat myself." -Mark Twain