1956 Bicentenario de la Imprenta 1755-1955
Ecuador 1956 scott605 611C302 C305
Ecuador 1956 scott605
Ecuador 1956 scott606
Ecuador 1956 scott607
Ecuador 1956 scott608
Ecuador 1956 scott609
Ecuador 1956 scott610
Ecuador 1956 scott611
Ecuador 1956 scottC302
Ecuador 1956 scottC303
Ecuador 1956 scottC304
Ecuador 1956 scottC305