The aesthetics/attractiveness of a pattern welded tube is a different issue from the strength of that tube.
Attractive crolle patterns are symmetric and uniform; the scrolls are similar in shape and size and the contrast consistent.
That doesn't necessarily mean there is a defect that lowers the strength of that tube.
https://docs.google.com/document/d/1YJxP1k3PzmtmrG1HEGxd8X6g0-1GL0KNY8WMIMkdKr0/editThis is a nice Parker D3 3 Iron "Oxford"
Parker D6 6 Iron "Turkish".
Lefever CE 4 Iron "Turkish Star" with amazing symmetry and artistry