This is a pictograph of a signboard. Therefore, it is the noun signboard.
Illustrative Text References:
Kalibangan: Seal impression: K-89 A: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 318: Collections in India: Suomalainen Tiedeakatemia.
Mohenjo-daro: Seal: M-954 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 92: Collections in Pakistan: Suomalainen Tiedeakatemia.
Image Credit:
Indus Script Sign Number 202: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.