Celtic Three Rings Metal Sign

About the Three Rings design

Each ring here is drawn as a pair of thin black outlines with a white channel between them, so the three loops look like hollow tubing rather than flat bands. One ring sits on top and two rest side by side below, stacked like a pyramid of barrel hoops. Where they cross, the outlines break and resume, so each ring passes over one neighbor and under the other. At the very center, all three overlaps close around a small curved triangle of white.