Not to be confused with the finned Elgin type Musselman hubs, which were turned from bar stock.
The Musselman Streamline front hub was introduced in late 1937 and is, cast of pot metal.
They came both nickel or chrome, and are delicate, yet sturdy once built into a wheel, providing that care is taken during the tensioning process.
I’ve built a few wheels with these hubs and have ridden many miles without any issues.
The bearing cups are pressed in, so take note, when purchasing one of these hubs, to make sure the cups are there and in decent shape.
Unfortunately, one characteristic about these hubs that I have noticed, is that instead of rusting, the way the bar stock hubs do, these cast pot metal hubs tend to corrode by blistering from underneath, so finding a clean example these days is getting harder and harder to do, as the years go by.
If they’ve been left out in the weather for any length of time, they can get pretty crusty, which may play a significant role in how brittle the pot metal has become.
Just my observations of this neat looking hub.