Bob Layton Signed 12×18 Poster. This is a Authentic Signed 12×18 Poster that has been Personally Signed & Autographed by Bob Layton. This item will include a Certificate of Authenticity (COA) from Rad Autographs. Signed By: Bob Layton. Autograph Obtained By: Rad Autographs. Rad Autographs offers only Authentic In-Person Autographs. All autographs will include a Certificate of Authenticity from Rad Autographs. We guarantee all autographed memorabilia to pass any third party authentication companies. If you have any questions feel free to message us, and we will get back to you promptly. Please have a look at our Store for more great items.