It is a very simple pattern of one white quartre-foil (four-leaf clover) after another appliqued onto pale blue silk. The 4 rings are R 3 - 3 - 3 - 3 each. When joining the last ring to the first, the 4 rings become a square. Remember to turn over the first ring twice before joining so the joined picot will remain open.

The sample was made one square at a time and (GASP!) cut and tied. Using split rings, it may be tatted in 1 or 2 passes without cutting or tying. Does anyone have this pattern in a book with a date?