RARE Harker 1840 Children’s Mug with Duck and Puppy Dog - East Liverpool, Ohio

Harker Potteries was founded in East Liverpool, Ohio in 1840. This pre-1940s Harker Children’s Mug has an adorable a duck on one side and a outpouring on the other. This pattern and coloring looks very similar to my grandmother’s baby dishes from 1915, but I can’t find anything to date this particular pattern. There is ONE baby plate for sale online with the same pattern. The mug is in incredible antique condition with no chips or crazing. Colors are vibrant and cheerful. Stands approx 3” tall and holds about 8oz. All offers considered. Smoke & pet free home.