As most of you know, i recently acquired a 1925/26 28” wheel Iver Johnson. While disassembling and cleaning I noticed a “26” stamped on both crank arms. I am curious what that is all about? One thought from a Caber was for the amount of teeth on the chain wheel ( there is 26 teeth on it). Another was the year of the bike. Has anybody seen this before? Any idea what it means?