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Well, for the closed end (M) it looks like it has to be 20161 then, not 2016....
Found one here: https://www.amazon.com/Koyo-NRB-M-20161-Needle-Bearing/dp/B07DJ9XK72
I just inserted all the bearing numbers in this exploded view diagram (taken from my favorite parts book ORD 9 SNL G-742, JAN1955...)
Except for the input gear roller bearing assemblies (found only through eBay), all others are std/popular sizes.