According to Times of India report, the duplex belonged to ABN Amro bank and the deal was brokered by the London-headquartered real estate adviser, DTZ.
Samudra Mahal is one of the most sought-after residential buildings in the city.
The report said that the duplex is spread over a built-up area of 3,640 sq ft and has four bedrooms and two covered car parks. The building has a swimming pool, a children's play area and a small football field.
Industrialist Nusli Wadia once owned a triplex spread over 8,000 sq ft here. Four years ago, the Wadias sold it in excess of Rs 31 crore, the report said.
The last highest deal was recorded at NCPA Apartment at Nariman Point in 2007. It was bought by a London-based NRI at a rate of Rs 97,842 a sq ft (Rs 34 crore).
In recent weeks, the real estate market has revived with large value commercial property making a comeback.