Glossy quality crochet cotton or fil d’Ecosse size 10. Steel crochet hook US size 8 (1.25 mm) or size for gauge.

First two rounds measure 1 3/4” (4.2 cm) in diameter.

Pattern 8, page 16 of Crochet Monthly 314.
Designer credited in Decorative Crochet #90.
“Ronde Effrenee” in 1000 Mailles.

Pattern 8, Sierkleedge, in Haekling/Creations Crochet.