A skull with two banners. Traced from an image found at http://www.radicalgraphics.org/ <br/>頭骨與橫幅<br/>banner、black & white、coloring book、contour、death、decorative、grinning、horror、jolly roger、line art、outline、piracy、radical graphics、skull<br/>旗幟、黑，白、填色本、輪廓、死亡、裝飾、獰笑、恐怖、海盜旗、線條藝術、大綱、海盜行為、激進的圖形、頭骨<br/>資料來源：openclipart ( https://openclipart.org/ )