https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13956610Edit ImageSaveSaveEditCropCustom TextSeventeen different pieces of sealed, precious medicinal earth known as 'terra sigillata'. Pen drawing.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 972 x 1200 px | 300 dpiLarge JPEG 2507 x 3094 px | 300 dpiFree DownloadSeventeen different pieces of sealed, precious medicinal earth known as 'terra sigillata'. Pen drawing.More