Three English enamel snuff boxes, c.1770-80, the largest rectangular and painted with a figure

Three English enamel snuff boxes, c.1770-80, the largest rectangular and painted with a figure leading a horse across a bridge, a smaller rectangular box with Classical ruins in a landscape, and a circular box painted with figures beside a fountain, all with smaller landscape vignettes to the sides, gilt metal mounts, some cracking, 8.3cm max. (3)