Size 20

First 3 rounds measure 1.75” diameter

Pattern 13, pg 31 in Decorative Crochet.
Pattern Centro Atlantida in Puntorama Ganchillo.
Pattern Force Centrifuge in 1000 Mailles, on p. 24. (This issue has one pattern mis-named as Force Centrifuge on p. 26.)

Advanced
Worked with long stitches throughout. Bobble treble, clusters, quad treble, picots. One break.