Collectors prepare to gather ’round the circle for Morphy’s May 26 Marble auction » 509

Christensen Agate cyclone guinea marble with ‘submarine’ effect, est. $700-$1,000. Morphy Auctions image.

Christensen Agate cyclone guinea marble with ‘submarine’ effect, est. $700-$1,000. Morphy Auctions image.

Four-paneled controlled mica onionskin marble, est. $2,000-$3,000. Morphy Auctions image.

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