Portrait bust of Emperor Gallienus, 3rd century CE, Romisch-Germanisches Museum, Cologne
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Original image by Carole Raddato. Uploaded by Ibolya Horvath, published on 08 November 2017 under the following license: Creative Commons: Attribution-ShareAlike. This license lets others remix, tweak, and build upon your work even for commercial reasons, as long as they credit you and license their new creations under the identical terms.