AN ENAMEL PENDANT DESIGNED BY ARCHIBALD KNOX FOR LIBERTY AND CO

With Liberty and Co maker's mark and 'Silver',
the oval cell of green and purple enamel to a pierced mount with entrelac surmount, 4.8cm long.

Photograph and description courtesy of Bonhams.

I believe this started life as brooch model 1115 and has been tastefully turned into a pendant.