At left: 610 Park Avenue; Top center: Nautica founder David Chu; Bottom center: Listing broker Carrie Chiang, of the Corcoran Group; At right: Penthouse 16E

The duplex penthouse at the former Mayfair Hotel, which belongs to Nautica founder David Chu, officially hit the market yesterday at $32.8 million — roughly $4,260 per square foot. The price tag makes it one of the top 10 most expensive condo listings in the city, according to data from Streeteasy.com.

The penthouse is one of two in the 15-story, prewar limestone and brick building, now known as 610 Park Avenue. Investment firm Colony Capital purchased the property for $15 million in a 1996 foreclosure sale and teamed up with Donald Trump in the condo conversion project, which was designed by architect Costas Kondylis.

Chu, the Taiwanese-American apparel mogul, and his wife, Gina, a philanthropist and trustee at the non-profit Asia Society, purchased penthouse 16E at 610 Park Avenue in 1999, city property records show. It had been combined with the unit below, and while sale prices for apartments before 2003 are not publicly available, the pair took out a $5 million mortgage at the time to pay for at least some of the home, according to the records.