from Decorative Crochet Magazine:
INTERMEDIATE
SIZE 20 1/2” diameter crochet cotton no. 10, white ca. 310 yrds
Steel Crochet hook US size 7

SIZE 13 3/4” in diameter crochet cotton no. 30 and steel hook US size 11.

Pattern is charted in 27 ROUNDS
Special Stitches:
3-tr cluster
1 dtr (on round 23)

Round 27 edging requires turning the work twice to finish sc on 6 chain and a picot.