Excavations at the newly discovered Harappan site of Tigrana in Haryana have brought to light a specialized terracotta stamp-making workshop. The discovery includes hundreds of unfired clay molds and several finished steatite stamps featuring the iconic 'unicorn' and 'bull' motifs. This site appears to have been a regional hub for the mass production of the administrative seals used across the Indus Valley trade network.
The workshop area was found with specialized polishing stones and fine-tipped bone tools used for engraving the intricate Indus script. Unlike larger urban centers like Mohenjo-Daro, Tigrana seems to have specialized specifically in the early stages of stamp production before they were distributed to other cities. This find highlights the decentralized nature of Harappan industrial production and the high level of standardization maintained across small rural outposts.