Two errors have been identified in the design of Lesotho 167 issued in 1974 to commemorate the Centenary of the Universal Postal Union. The first is that the names Mahlanapeng and Mokhotlong have been transposed. The second error is that the line showing the airmail service route between Mahlanapeng and Mokhotlong is missing.

     The coordinates for Mohlanapeng are: 29°36´S/28°31´E.
     The coordinates for Mokhotlong are:     29°13´S/29°01´E.