There's was ever made round picture tubes with in-line shadow mask?

[frenchy]

<<<IIRC, the Portacolor was the first inline gun set, though it had a regular looking dot pattern, not a stripe one like later tubes have.
I wonder what the advantages of inline are anyway, and if they even apply to round color tubes, i.,e., do they just help convergence at the edges?>>>

I think it just simplifies the convergence since they are at least all on the same horizontal plane instead of 3 distinct 2-dimensional points. Less circuitry involved in getting all of them together at all points on the screen. Probably same magnetic circuit controls the vertical convergence on all 3 guns. I think.....