This motif is number 26 in 'Beads and Beads Tatting 1' by Mituko Ikuta. The book is great, in that it has some nice techniques and some usual bead uses, but some of the designs look a bit dated. So for me, this particular design is more interesting than attractive. I'd love to get a look at book 2 and 3 in the series.
There are some mistakes there; some miscounted chains and stitches the 'wrong' way around. Still, split rings makes me happy, so I'll leave it as it is and chase perfection some other day.