"Frenchy" here again ---
We (or should I say Oui?) have on offer today a Soubitez Block 120 Dynamo all-in-one lighting unit, 6v - 3w. Dynamo housing is metal and seems heavy-duty and well built. Light housing "chromed" plastique.
Comes with a fork bracket if you don't have a brazeon for a bloc, and also they've very thoughtfully provided a bulb, which I find often helps when one is seeking to light something.
I'm not good at dating these things, but no doubt somewhere in the '60s-'80s range. Would look slick on a later rando or city bike.
$25 shipped, lower 48.
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Whitewater, Wisconsin USA