4H Lazybones, robin egg blue glaze. DDS7/P7, glazed bottoms. This glaze has a dark blue flecking pattern that can vary a lot. Some have no discernable specks. Fortunately no other similar glazes were in use in the same time period. You have to go back to the last use of clay blue in 1961 to find a similar blue and that would be on a dark red clay.