Triquetra. A triangular shaped medallic item. The shape of the triangle depends upon the design. Some Masonic medals are triangular shaped for their symbolism; some art medals are so made for their artistic shape. Some examples are illustrated. See also unusual shapes.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor