Wonderful Studio Pottery Lava Vases Signed K Fantastic Form and Glaze

Studio Pottery Lava Vases Signed "K" Fantastic Form and Glaze. I really wish I could figure out the maker.

It is marked with single letter "K" on base. Very heavy, initially I though copper clad but no so. 4 3/4 tall, no cracks, some crazing and what i think are all manufacturing spike pull marks on base, otherwise just a wonderful green, frog-skin type glaze. Nice bubbles and lava effect.

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