Cordonnet crochet thread size 40. Steel crochet hook US size 12 (0.75 mm) or size for gauge.

Intermediate. First two rounds measure 5/8” (1.6 cm) in diameter. 27 rounds.

Pattern 5, no name given, page 10 of Magic Crochet 152.
pattern 6 in Lace of Europe.
Called Pensee in 1000 Mailles, Napperons au Crochet #101