1972 Cross pen/pencil sequenced set

This is a 1972 10kt gold electroplated Cross pen/pencil sequenced set.... they are in the originial excellent condition box with the paperwork and card the matches the initials on the set.... I would greatly appreciate any information you can give me on these or give me names of places that I can go to to do more research on them.... thank you for your time, Joeseph Courchesne