Size 20. Steel crochet hook US size 10

First three rounds measure 2 1/8” in diameter. Intermediate. Partial written, chart; both useful for making. Scalloped round.

Pattern 1, page 2 in Decorative Crochet.
“Corola de pinas” in Puntorama Ganchillo.
“Hortensia” in 1000 Mailles.