u/Immediate_Occasion_6

Just today I bought these pens at a garage sale, $3 for the Black one and $5 for the twin Blue ones. I was able to find the company they came from since they were in their original packaging (Helveco and A.T. Cross), but I wasn't able to find the model number for the Cross pens. The Helveco pen had it's model number as HBP116NN, but searching it up brought no results. I want to know the model number so I can know what refills to buy.