Famous Smoke accepts gift certificates and most major credit cards (Visa, MasterCard, American Express, Discover, Optima). For your safety, you must enter the CVV/CCV code when using a new credit card. CVV (Card Verification/Verification Value) or CCV (Credit Card Verification/Verification) is a 3 or 4-digit code plate that is embossed or embossed on the back of Visa, MasterCard and Discover cards and on the signature panel on the front of American Express.