If you modify an Indus symbol by adding one point of light at each of the cardinal points, it means that it is true everywhere. This is the noun donkey load surrounded by four points of light.
Hence, the translation is: laden donkeys everywhere.
Sample Text Reference:
Mohenjo-daro: Seal: M-675 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 34: Collections in Pakistan: Suomalainen Tiedeakatemia.
Indus Script Sign Number 390: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.