Mauritania_1961_Yvert_Taxe_7-Scott_J_brown_cadre_714_Lc_centre_702_Lx_overprint_4741_Lx

Mauritania_1961_Yvert_Taxe_7-Scott_J_grey_cadre_604_Lx_centre_615_Lc_overprint_4749_Lx_typo

Mauritania_1961_Yvert_Taxe_7-Scott_J_violet_cadre_525_Lc_centre_533_Lx_overprint_4749_Lx_typo