Good evening!
In my attempts to make the toy hammock for my 4-year old, I came across the above knot, illustrated in Kim Sang Lan's "Decorative Knot Craft" (copyrighted 2006, first published UK 2008 by David & Charles, ISBN 0715329227 (9780715329221). It's illustrated there in four-unit and five-unit variants, both flat and ring (ball).
To my untrained eye, it looks an awful lot like a Turk's Head type knot. Is that so?
Regards
Glenys Chew