Cup and saucer with twisted panels with landscape or flower spray

Cup and saucer of porcelain with modelled wall, painted in underglaze blue. On the wall of the cup twisted compartments with alternating a mountain landscape with persons, pavilions and trees and a flower branch; on the base a flower branch; the rim with four half-flowers with branches. The saucer with the same decoration on the front; the back with three flower branches. Both marked on the underside with a shell in a double circle. Part missing from the rim of the saucer. Blue-and-white.