SIGNED BY : ROBIN ZANDER, RICK NIELSEN, TOM PETERSSON, BUN E. It has been SIGNED BY : ROBIN ZANDER, RICK NIELSEN, TOM PETERSSON, BUN E. Has all 4 members, unlike most of the others out there for sale. Comes with a full Letter of Authentication from JSA. Which has been notarized. Can be looked up for verification at their website with the unique serial number Z99093 that is fixed to the front of the item. Please message me if you have any questions.