used Block of Four 2½d. on 20pf. ultramarine block of four with sheet margin at foot, the lower right stamp showing variety comma after "I", fine used on piece. B.P.A. Certificate (1998). S.G. 104/104d, £355

細節

used Block of Four 2½d. on 20pf. ultramarine block of four with sheet margin at foot, the lower right stamp showing variety comma after "I", fine used on piece. B.P.A. Certificate (1998). S.G. 104/104d, £355