It is marked M-C-A Signs which proves its authenticity. Not 100% mint (nothing is to me) but very nice as you can see and looks very cool when displayed..... You would be hard pressed to ever find a nicer one. It's completely original with no touch ups or repairs and it's GUARANTEED authentic. I SELL OLD ADVERTISING WHICH MOST ITEMS HAVE BEEN USED AND ARE IN USED CONDITION.The item "NEAR MINT 1966 Vintage COCA COLA FISHTAIL Old Original 32x10 inch Tin Sign" is in sale since Thursday, March 31, 2016. This item is in the category "Collectibles\Advertising\Soda\Coca-Cola\Signs". The seller is "nekbe" and is located in Kilbourne, Illinois. This item can be shipped to United States.