Gravestone of Muhammad ibn Abi Bakr, died Shawwal 532 A.H. June/July 1138 A.D. https://www.rawpixel.com/image/9087781/photo-image-art-vintage-public-domainFree Image from public domain licenseTile, Sultanabad, pottery, with raised blue inscription on black and white floral background.. Original from the Minneapolis… https://www.rawpixel.com/image/7656597/photo-image-background-vintage-artFree Image from public domain licensepaddle-like, large board with crescent shaped "handle" at top; handle covered in dark brown animal hide; rectangular portion… https://www.rawpixel.com/image/7654162/photo-image-vintage-art-public-domainFree Image from public domain license