Professional Sports Authenticator (PSA) is the world's largest third-party grading and authentication service. Each signature submitted for autograph authentication is thoroughly examined by the foremost signature expert in the industry. Life long experience, a nationally recognized reputation, the largest exemplary file in the hobby and formal training in the field of Forensic Document Examination combine to offer the most reliable service to identify autograph legitimacy. Opinion of the authenticators at PSA/DNA are respected throughout the hobby and are the authority when it comes to deeming a signature authentic. When you see PSA/DNA you can feel confident that you are receiving a genuine 100% Authentic signature.The item "MATT GROENING Signed Autographed BART SIMPSON Sketch Photo PSA/DNA SLABBED" is in sale since Monday, August 7, 2017. This item is in the category "Collectibles\Autographs\Celebrities". The seller is "autographbay" and is located in Houston, Texas. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Cayman islands.