Back in the late 1990s I mailed this card to Roush Racing along with a self addressed stamped envelope to return the card to me in. Approximately a year later I received the card back signed. To make it perfectly clear I did not see Mark Martin sign this card, and I do not have a COA. Check out my more then 5,000 positive feedbacks and buy with confidence. Local pick up is available. All items from smoke free home.