So it seems the rear hub of my Hershey wheelset is missing a crucial part on the driveside -- the part of the axle that sits in the dropout. A Google search for Hershey hubs didn't help. I did find a scan on mombat, but I can't glean any details from it. Anyone know what I need to source, or have a spare donor hub?
Pic of non-driveside for comparison:
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