Zippo Pens salesmen Sample set authentic

This is a sales men sample sleeve . 11 Pens, Garland , Miller Beer
,Sherwin Williams, Citgo, VIP Motors, Phillips 66, railroad, a plane. They all need ball point pen refills. I purchase this set from and estate sale, he worked as a sale men for the company Zippo. Its is missing 2 pens. Made is the USA.