unused Block Larger Than four  -- 5pf. on 10pf. variety blue bar omitted, a spectacular margin block of twelve (2x6) showing interpanneau margin and different types of surcharge; some split and reinforced perfs. on lower half. A block of exhibition quality. Bothe and Mansfeld Certificates (1972). Chan Gl2a. Mizuhara Collection. Photo
unused Block Larger Than four -- 5pf. on 10pf. variety blue bar omitted, a spectacular margin block of twelve (2x6) showing interpanneau margin and different types of surcharge; some split and reinforced perfs. on lower half. A block of exhibition quality. Bothe and Mansfeld Certificates (1972). Chan Gl2a. Mizuhara Collection. Photo

Details
unused Block Larger Than four -- 5pf. on 10pf. variety blue bar omitted, a spectacular margin block of twelve (2x6) showing interpanneau margin and different types of surcharge; some split and reinforced perfs. on lower half. A block of exhibition quality. Bothe and Mansfeld Certificates (1972). Chan Gl2a. Mizuhara Collection. Photo