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Lot 445. Gertrud & Otto Natzler, Hemishperical bowl with very rare black volcanic glaze, Los Angeles, CA, 1960s; Signed NATZLER, label H518; 4" x 6 1/2". Estimate: $5,000 - $7,500. Sale Price: $10,000© Rago Auction

Note: A rare example in this glaze.

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Lot 445. Gertrud & Otto Natzler, Large earthenware bowl, white, cobalt and brown volcanic glaze, Los Angeles, CA, 1960s; Spurious illegible pencil markings, paper label, H958; 6 1/2" x 10". Estimate: $14,000 - $19,000. Unsold© Rago Auction

Note: A large example with exceptional glaze.