Genus & species for "Sputnik" sea urchin?

Can anyone supply the genus & species names (and locality) for the
"Sputnik" sea urchins commonly offered for sale on eBay? See, e.g.,
http://cgi.ebay.com/WHOLE-SPUTNIK-SEA-URCHIN-SEASHELL_W0QQitemZ6549571990QQcategoryZ4838QQssPageNameZWDVWQQrdZ1QQcmdZViewItem.

.

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