The United States Marshals Service on Wednesday unveiled hundreds of items that it will auction off this weekend to raise money to repay the victims of Bernard L. Madoff’s vast Ponzi scheme. As with the government’s first Madoff auction a year ago, plenty of watches and jewelry, including a 10.5-carat diamond engagement ring, are up for grabs. But so are many less-glamorous trinkets, collected from the drawers and closets of the Madoff penthouse apartment on the Upper East Side of Manhattan and their beach house in Montauk, N.Y. A public viewing of the Madoffs’ wares will be held Friday, with the auction following on Saturday at the Sheraton New York Hotel and Towers in Midtown Manhattan and via an Internet simulcast at: http://www.txauction.com/