A group of five seals with aquatic decoration

Chinese Works of Art
A group of five seals with aquatic decoration
All of various custard yellow hues, the first of horizontal rectangular section surmounted by an intricately incised depiction of crabs on waves, the seal face incised in a lengthy inscription partially obscured by an old collection label; the second of tall square section adorned by two fish along the outer tip of one side and vertically split by a natural fissure in the stone along the reverse, the face carved in elaborately archaistic characters to read possibly ding qian; the third, fourth and fifth all of similar shape, consisting of a tall and thin rectangular plinth surmounted by a single fish amid waves, one carved to the underside to read Wang Yalun, the other two with uncarved faces.
1 7/8 in (4.8cm) height of second and tallest (5).