NYC’s oldest citizen died yesterday, after telling the Post last month, she “wouldn’t want to do this again.” In her 111 years, Jane Gilsenan, known as Jenny to friends, lived through the Depression, saw her brothers fight in WWII and—most amazingly—paid $16/ month in rent on the Upper West Side! Aging experts are baffled by Gilsenan and her fellow centenarians. One said she “inherited a lucky set of genes” just like her mother who lived to be 99 and her older sister who died at 102. Besides daily doses of vitamins A and D and the occasional glass of cream sherry, Gilsenan denied having any aging secrets. "I have none, and I wouldn't give them away because I wouldn't wish it on anybody," she said. Unlike another recently deceased old-timer, she had no kids.