Titled 'Vintage CDV Paul Charles Morphy American chess player photo by Appelton', it had a starting price of US $19.99 and finally sold for $519.00 after 12 bids from five bidders. The item's description carried no more information other than a copy of Wikipedia's Morphy page.
What's a CDV? The eBay page CDV Photos: What are they? (Buying Guides > Photographic Images > Vintage & Antique (Pre-1940) > CDVs) says,
Those three letters are an acronym for the French carte de visite or visiting card. This style of antique photography took over in popularity from the daguerreotype or ambrotype of the 1840s and 1850s. Though they provided lovely images, the dag and ambro were easily damaged and not suitable to tuck into an album or a letter to a friend. The Civil War era of the 1860s, however, saw a wide acceptance of the cdv, the invention of either Adolph Disderi in 1854 or Louis Dodero in 1851.
The cdv photograph belongs to the group known as card photographs because the albumen print (a mixture of egg whites, sodium chloride, and silver nitrate) was mounted on paper cards. The size of a cdv is 2 1/4" x 4 1/4".
The back of the Morphy CDV carries a signature (that doesn't match the signature on the 'Stereoview' item) and the printed identification,
CARTES DE VISITE
D.APPLETON & Co.
443 & 445 Broadway N.Y.
I searched my collection of chess images and found many more that featured CDVs, including another showing Morphy. These might be worth a future post.
Follow-up: Brady CDVs (September 2016).