Weinmann made a few, evidently. I recall the 210 but learned there were also knurled tubular rims.
Yup, though I know little about them. The came on a late sixties Raleigh Carlton that came my way recently...
The rims are alloy, in good shape and do sport a braking surface pattern...
That said, steel or patterned, they do add, in my opinion, to the effectiveness of stopping. However, they are terribly noisy, offering a loud buzzing sound every time one hits the brakes.