You really have to be missing a few bricks to think this is a Carter button, but try to convince some eBay sellers it isn't. I contacted one seller last year with a polite correction, and my message was ignored. He never corrected his listing, and retaliated by blocking me from bidding. Is that a sign of maturity? It should be obvious from the message on the button that it is advertising low prices for manufacturing buttons. It is from a company called Hantico and I picked up some in their booth at a trade show back in the 80s. Yes, I've done sales in the industry, so I know what I'm talking about.
