2021 Argor-Heraeus Lunar Series Year of the Ox 1 oz Fine. This handsome 1 oz minted Year of the Ox gold bar has a gold purity of 99.99% and is fabricated by Argor-Heraeus, one of Switzerland’s most prestigious precious metals refiners. Argor-Heraeus is headquartered in Mendrisio in the Swiss Canton of Ticino, beside the Italian border. The front of the 1 oz gold bar is embossed with the famous Argor-Heraeus refinery stamp which consists of an’AH’ motif encircled by the words’ARGOR HERAEUS SA’, The front surface also contains the refinery location’Switzerland’, the bar’s weight and fine gold content,’1 ounce Fine Gold 999.9′, and the bar’s unique serial number and Assay stamp. Each 1 oz minted gold bar has a rectangular design, curved edges and a highly polished finish. Each 1 oz minted gold bar also comes presented in its own PET transparent tamper-proof blister pack which doubles as the bar’s assay card.