Mischief sign Posted on October 12, 2022 by admin Mischief sign Sign - Symbol - Watermark - Trademark - Company logo. The below image is of the Mischief sign showing the sign by itself or the logo including the brand name of the relevant organization. Mischief sign Tags: mischief sign, mischief sign brand, mischief sign logo, mischief sign logos, mischief sign sign, mischief sign symbol, mischief sign trademark