The Indus Dictionary Project
This is the outline of a leaf. Leaves were used to wrap foodstuffs for storage. The template may have been a leaf from a sal tree. However, the absence of detail indicates that the plant is not important. The symbol is an ideograph for a wrapper. It is the verb to keep, to store up, or to stock.
Harappa: Seal: H-10 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 167: Collections in India: Suomalainen Tiedeakatemia.
In inscription H-10, this symbol is repeated. There is literally more than one item in storage. Hence, repetition of Mahadevan's sign number 323 is an ideograph for the verb to hoard.
Indus Script Sign Number 323: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.