Duo of rice bowls in stoneware/handmade glazed ceramic "Wabi-Sabi"

Duo of very pretty japanese rice bowls, or style. Wabi-sabi in ceramic or glazed stoneware, handcrafted, one dark brown/black with a slightly iridescent burgundy/brown pattern, not stamped, 6.5cm high, 14cm max diameter. The other, smaller, magnificent texture and hue of oxblood, burgundy to pink, veined with white. Stamped cb under the foot (or other, to be determined/identified). 13.2cm max diameter, 5.5cm high. The brown/black has some relatively discreet minor scratches on the inside. The red is in perfect condition, see photos: the enamel irregularities on the edges of the bowl are not chips or chips but a natural effect of the enamel specific to handcrafting and this style of ceramic, checked with a jeweler's eye. 300/400gr each.