Missing button

[migirl]

DH has lost one of the buttons from his Bill Blass blazer, it's a very distinctive-looking button and I've looked through my stash of replacement buttons and can't find a spare. Does anyone know of a website or brick-and-mortar store where they sell replacement buttons like this? If I can't find one I guess I could replace ALL of the buttons on the blazer, but it would be nicer (and easier! ) if I could find a match.