A special cover for Gangadhar Dattatraya Ambekar was released in Mumbai on 21 August 2026, according to an illustrated report published by MB’s Stamps of India on 8 November. The envelope is inscribed with his name in English and Devanagari and the wording “120 Years Birth Centenary Celebration”.

The illustrated cover combines Ambekar’s portrait with a photograph of a building bearing the Rashtriya Mill Mazdoor Sangh name. A trade-union emblem appears near the upper left. At the upper right, a ₹5 Ambekar portrait stamp is paired with an INTUC emblem label.

The cancellation repeats the emblem and Ambekar’s name, identifies Mumbai 400001 and bears the date 21-08-2026. Its vertical inscription identifies a 120th birth-anniversary celebration. The dated, serviced envelope documents the accompanying special-cover product.