T213-1 Rossman's are difficult to find for sure. SGC updated their pop reports recently, and they show one Rossman, graded SGC 1. There is also a T213-1 Rossman in the Burdick Collection at the MET. I learned just recently that he donated a complete set of T213-1's to the museum.
www.metmuseum.org/art/collection/search/417940