Maybe it's the poor photos or maybe I missed something, what do you see besides the 1913? And Yes 1913 was an cool year for Nickels!
Clearly I am seeing things, and even though it makes no sense, I could have sworn the "steel cent" read 42.
The set was started prior to the introduction of the small dollar. You can see there is no end date for the ike dollar. I believe the mfg of the holders made seperate holders for the gold and commemoratives. This collection includes a seperate holder for popular coins from the nineteenth century.