NEW YORK — The Metropolitan Museum of Art announced on September 23 that it has received a gift of a rare American weathervane from Michael and Patricia Del Castello. Produced by an unidentified maker between 1909 and 1913, it was likely commissioned for the Poland Spring House in Poland Spring, Maine, where it was installed on its rooftop by 1914 and remained on view until 1973. The commanding and distinctive weathervane joins the Met’s growing collection of American vernacular sculpture and will be on view in Gallery 732 in the American Wing starting September 29.