Gold Signet Ring of Michael Zorianos (1300). Original public domain image from The MET Museum. Digitally enhanced by… https://www.rawpixel.com/image/10103418/photo-image-vintage-gold-illustrationsFree Image from public domain licenseSignet Ring of John, Imperial Spatharios. Original public domain image from The Metropolitan Museum of Art. Digitally… https://www.rawpixel.com/image/9851699/photo-image-art-vintage-goldFree Image from public domain licenseFragment from the Base of a Bowl with "K" Monogram by Byzantine https://www.rawpixel.com/image/9046113/fragment-from-the-base-bowl-with-k-monogram-byzantineFree Image from public domain licenseHyperpyron (Coin) of Andronicus II Palaeologus and Michael IX by Byzantine https://www.rawpixel.com/image/8958511/hyperpyron-coin-andronicus-palaeologus-and-michael-byzantineFree Image from public domain license