Ed Kasper wrote (and I snip the part about the wheels):
"The crescent is the mark of Robergel...but I think they used an 'E' on their stainless spokes. (Trois Etoile? Maybe Sheldon or somebody else fluent in French can help me here.)
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My memory coincides with Ed's on the "E" on Robergel stainless spokes, but I distinctly remember a backwards capital R on the non-stainless ones (which also have a peculiar thread relative to other spoke brands). I've seen the crescent but did not associate it with Robergel.
harvey sachs
mcLean va