Morphy’s to host its largest-ever auction of antique and vintage marbles on Dec. 3, featuring the Paul Baumann collection » 1120b

Christensen Agate No. 00 Guinea Marbles boxed set, believed to be the only extant example of this set, contains 13 blue guineas and 12 clear specimens. Provenance: John Early, marble grader for Christensen Agate Co. Est. $9,000-$12,000. Morphy Auctions image.

Christensen Agate No. 00 Guinea Marbles boxed set, believed to be the only extant example of this set, contains 13 blue guineas and 12 clear specimens. Provenance: John Early, marble grader for Christensen Agate Co. Est. $9,000-$12,000. Morphy Auctions image.