A young man was robbed of his $300 blue Marmot jacket on Oct. 19 as he was leaving the subway at 4:17 p.m. Cops said the 18-year-old victim was exiting the East 63rd Street and Lexington Avenue station when three muggers surrounded him. One simulated a knife and said â??Give me your jacket or I"ll cut you up, according to cops. Another said he had a â??burner, or a gun. The victim complied and handed over the jacket.