Sisk and Wotkins-Morse are two makers of bullets from the 30s to the 50s, Mostly they were small caliber .22 and 6 mm bullets sold to handloaders in the US. Is there any collector interest in these bullets when still in the original boxes?
Yes, bullet boxes in good condition are collectable.
By the way Sisk sold bullets until 1970.
Anything is collectable to the right person.