Lot 679, Roman States 1852 50b dull blue Papal Arms, no gum July 24, 2020February 2, 2016 by Sparks Auctions Lot 679 Roman States #10 1852 50 baiocco dull blue Papal Arms, unused (no gum), hinge remnant, pencil notations on reverse, a few thinned spots. Accompanied by 1991 APS certificate. Scott CV US$18,000