Three English enamel patch boxes c.1800

Three English enamel patch boxes c.1800, one painted with an optical illusion portrait of a couple titled 'One Month Before Marriage', and 'One Month After Marriage', one painted with a pair of doves and titled 'A Pledge of Love', the last with a couple and inscribed 'How Sweets the Love that meet return', on pink and yellow bases, two with mirrored interiors, some damages, 4.8cm max. (3)