On March 20, 2002, Nampost issued 2 mini-sheets with the theme “Domestic women”. On the gum side of each stamp further explanations were printed in text form. However, the error occurred that in both sheets the reverse texts were printed vertically mirror-inverted on the stamps, i.e. the description did not match the respective stamp. In addition, one of the stamps had "STANDARD MAIIL" printed instead of "STANDARD MAIL". Corrected mini-sheets were issued on April 5, 2002.