Your other thread https://www.cointalk.com/threads/1988-major-die-brake-penny-worth-any-thing.321082/ it is a CUD
Obviously you weren't satisfied with the comments on you other thread pointed out by Paddyman98. To satisfy yourself send it to ANACS as I understand they grade error coins with the error on the label. Maybe PCGS and NGC do the same but I'm not sure. Then put it up on ebay.