This is a pictograph of three beads threaded on a string. Hence, it is the noun beads.
Illustrative Text References:
Harappa: Seal: H-155 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 202: Collections in India: Suomalainen Tiedeakatemia.
Harappa: Seal: Plate LXXXVI: Image 34: Madho Sarup Vats, 1940: Excavations at Harappa: Being an Account of the Excavations at Harappa carried out between the Years 1920-21 and 1933-34: Volume II: Government of India Press, Calcutta.
Kalibangan: Seal: K-20 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 302: Collections in India: Suomalainen Tiedeakatemia.
Comment:
The Vats seal is interesting because it states that the consignment was destined for the kiln, and we know that gold, silver and copper beads were found during the excavation¹. Unfortunately, I can't find the seal in the Parpola Corpus, so it may have been lost.
Image Credit:
Indus Script Sign Number 417: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.
Note:
1. Metal Beads: Madho Sarup Vats, 1940: Excavations at Harappa: Being an Account of the Excavations at Harappa carried out between the Years 1920-21 and 1933-34: Volume I: Page 432: Government of India Press, Calcutta.