Old Port Imported East Indian Rum hails from the Amrut Distillery in Kambipura, Bangalore, India.
The Indian rum market is huge (India is huge). Until very recently Old Monk was the biggest selling dark rum in India. In more recent times McDowells No1 Rum has replaced Old Monk at the top of the charts. For one reason or another Old Port seems to be more appreciated amongst rum lovers outside of India, than in its home country.