Portraits of the four tetrarchs, ca. A.D. 305. Porphyry, approx. 4’ 3" high. Sain
![Portraits of the four tetrarchs, ca. A.D. 305. Porphyry, approx. 4’ 3" high. Sain](https://64.media.tumblr.com/tumblr_m651y7neUv1r0pas8o1_1280.jpg "Portraits of the four tetrarchs, ca. A.D. 305. Porphyry, approx. 4’ 3" high. Sain")
Portraits of the four tetrarchs, ca. A.D. 305. Porphyry, approx. 4’ 3" high. Saint Mark’s, Venice. -- source link
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