Framenummers 6988-6993 - RIH Sport Amsterdam

6988 - Riksma - June 1956 (est)
6989 - van Vek ? - June 1956 (est)
6990 - Hartog - June 1956 (est)
6991 - Hendriks - June 1956 (est)
6992 - Vulpen? - June 1956 (est)
6993 - de Groot - June 1956 (est)