Size 10 thread. Steel crochet hook size 8 (1.25mm) or size for gauge.

Challenging. Y stitches, dtr-clusters, double triple bobble clusters, other combination stitches.

Pattern 2, p 10 of Magic Crochet.
Featured on cover of Crochet Monthly, called “Corn Doily.”
Pattern 7, Paille, in Crochet d’Art.