The Indus Dictionary Project
If you modify an Indus symbol by adding one point of light at each of the cardinal points, it signifies that the statement is true everywhere. This is the noun weight combined with the verb to deliver and the adverb everywhere. Hence, the translation is: 'load delivered everywhere'.
Mohenjo-daro: Seal: M-280 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 68: Collections in India: Suomalainen Tiedeakatemia.
There is only one extant example of this Indus sign.
Seal M-280 carries an elephant motif.
Indus Script Sign Number 61: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.