Two studio ceramic flower vases

Two studio ceramic flower vases
20th century
Of graduated size, each tall, faceted eight-sided vessel slightly flaring outwards near the rounded top pierced with an irregular opening and two side apertures with small knob-like protrusions, the mottled dark-red glazed bodies reminiscent of cresting waves, each with impressed maker's mark on the base.
15 3/8 and 10 7/8in (39 and 27.5cm) high