Don't have a COA for it

It came from an estate sale that I cleaned out after the sale was completed, the owner was a massive golf fan & collector who had hundreds of signed golf memorabilia throughout the house that he had gotten from events / games throughout his life, along with the signed golf stuff he had many signed prints hung high up on the walls throughout the house & other paintings worth thousands of dollars, this grinch poster was one of the framed ones I got off the wall next to other signed prints.