Leigh Keno, a Manhattan antiques dealer and furniture expert on “Antiques Roadshow,” will be honorary chairman of and attend the Gala Preview on Thursday for this year’s Antiques in the Gardens show and sale at Coastal Maine Botanical Gardens.

The gala will be 5 to 8 p.m. and features 30 antiques dealers, food and drinks — as well as a chance to meet Keno. Tickets are $75 and include not only admission to the party but also entry to the show and gardens on the following two days. They are available at MaineGardens.org, by phone at 633-4333, or in the Visitor Center.

The Antiques in the Gardens show and sale, now in its third year, will be open from 10 a.m. to 5 p.m. on Friday and Saturday. Tickets for the show alone are $12. A combo ticket to enter the show and Gardens is $20.