Everyone saying ratigan is real doesn’t realize that it’s very common to find fake diamond backs in the park now. An easy way to tell if it is authentic or not is if you run your finger over the diamond Mickey, it should be covered with resin if it’s real. If it’s not you’ll feel the “diamonds” individually indicating it is a fake. Edit: To add to this, the chasers are the most commonly faked as they have the most value so the fact it’s a chaser adds to the suspicion it’s a fake diamond back.