São Tomé & Principe, 1991

This small Country, formed by the S.Tomé and Principe islands, is located in the Guinea Gulf, crossed by the Equator. The local telecommunications company began operating in 1990 and issued the first phonecard one year…

Mali, 1988

The simple white chip cards with SoTelMa logo have been used in Mali for a long time and exist in many variations. However, before 1994 the optical cards provided by Landis & Gyr were used.…

Ghana, 1988

The design of the Landis & Gyr cards have been used for several years, and many reprints. However, they can be easily distinguished by control number on back; moreover, the blue 60 units card with…

Chad, 1988

Optical cards, only definitive with three values (30, 60 and 120 units), were supplied to Chad by Landis & Gyr. The first issues were without notch while later on they were reprinted notched. Then, in…