Here's vintage Cross Pen Duo Set,

containing 10kt Gold Ball Pen & Selectip Pen. 

These are custom pen sets, 

originally offered as gifts by General Mills. 

the General Mills logo is on the clips of the pens.

The pens are brand new, in the original box.

These were found in the backroom, stashed for 40 years. 

Similar pen sets have retailed for $249.95.