A magnificent duplex in one of Park Avenue's most distinguished co-op buildings, 655 Park Avenue's Apt. 8-9B opens a door on the grace and glamour of a past era while exemplifying the best of contemporary living. A classic floorplan unfolds from a private vestibule into a spacious gallery-like hall. The beautifully proportioned living, dining, sitting, family rooms and a wood paneled library-combine to make this the perfect home for entertaining; while a fantastically appointed kitchen offers top-of-the-line appliances and cabinetry as well as a roomy breakfast nook. A charming semi-circular sunroom and sheltered veranda lead outward onto a stunning rooftop terrace with spectacular views of Park Avenue. A lovely spiral staircase leads to the second floor, where an eat-in kitchen and second living room provide space for intimate family gatherings. The apartment's current configuration includes six bedrooms, including two master bedrooms with en-suite bath and separate maid's quarters. An office, an exercise room and a dressing room round out the floorplan, all of which could be repurposed as desired. Wood paneling, working fireplaces, crown moldings and Classical detailing appear throughout as well as seven walk-in closets, two storage rooms, four full baths and three baths with showers, all recently renovated. 655 Park Avenue was designed by the great J.E.R. Carpenter in conjunction with noted architect Mott B. Schmidt in the crisp, elegant style they helped to create during the pre-war period. One of their most restrained works, the building is surrounded by landmarked architecture with which it was expressly designed to harmonize. White glove service includes a doorman and elevator operator; Madison Avenue shopping, cafes and restaurants, the glories of Central Park and the Park Avenue Armory, one of the neighborhood's great cultural centers, are literally blocks away. An oasis of genteel calm in the heart of the Upper East Side, this is truly one of New York's great homes.