This one I think is just die fill or die wear - also visible on the F of FD. It's the sort of thing that leads in time to die repair and the occasional doubling of letters that was discussed in another post, but it is always possible that here the E has already been repaired with an L, but just can't tell from this photo whether it is just the top bar of the E that has gone or if strengthening has already been done with an L. In the Gouby book for pennies, look at the entries for 1860 and 1861 in particular and you'll see all sorts of repairs and part-letter repairs; the same thing happened with halfpennies, especially in these early years.