Puerto Rico - postage dues: 1900: TWO VERY FINE COVERS with US postage due stamp
Puerto Rico - postage dues
1900: TWO VERY FINE COVERS with US postage due stamps overprinted "PUERTO RICO": 1) "Board of charities of Puerto Rico San Juan" unfranked local cover (May 5 1900) with 2 cents postage due stamp with 36 degree Angle overprint (Scott J2). 2) "Board of charities of Puerto Rico" envelope...