NEW YORK CITY — TH Real Estate, an affiliate of Nuveen, has completed the disposition of 685 Third Avenue, an office building with ground-level retail space in Midtown Manhattan. UNIZO Holdings Co., a Tokyo-based real estate company, acquired the property for $467.5 million. The 31-story office building features 651,492 square feet of office and retail space. Office tenants include Sales Force, Tribune and Crain’s. The retail space houses Luke’s Lobster and Maison Kayser, an artisanal bakery. Bill Shanahan and Darcy Stacom of CBRE represented the buyer in the deal. This is UNIZO’s sixth New York City purchase.