While this button is not being sold as an original by the seller, it's clear that potential bidders may think that it is. The button is actually one of the plastic reproductions offered by The Blockade Runner some time ago. Note the "mottled" appearance of the plastic material and the remaining "flashing" that indicates poor finishing. Original buttons are smooth and solid looking like a bowling ball, and generally not as black as this button is.
http://cgi.ebay.com/Berdan-Button-/220823165869?pt=LH_DefaultDomain_0&hash=item336a161badCompare the above reproduction button to an original of the same style below. You'll notice the difference immediately.
http://cgi.ebay.com/GOODYEAR-RUBBER-CIVIL-WAR-BUTTON-20MM-/190561466321?pt=LH_DefaultDomain_0&hash=item2c5e5937d1Brian White
Wambaugh, White, & Co.
Randolph Mess, USSS
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Brian White
Wambaugh, White, & Company
http://www.wwandcompany.com----------------------------------
Randolph Mess, U.S. Sharpshooters