This is a composite character. Firstly, there is a pictograph of a container with handles, which is an ideograph for the verb to carry. Secondly, two counting rods have been added. The counting
rods tell us that a medium-sized load was being carried.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-1151 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 130: Collections in Pakistan: Suomalainen Tiedeakatemia.