French ivory is a kind of celluloid plastic, and the chips in the auction are this plastic. Look hot-stamped. I've seen chips like these before; I may have some. No big deal. Could the "d" have to do wih British currency? .... ...... ........ Nancy, why don't you and others provide a link?; easy to do. Here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=6111357603

Robert