All our Jumbo US coins are plated so they will stay shiny. The Kennedy and Eisenhower are plated with nickel the same metal the coins are made from, The Morgan and Walking Liberty are silver plated. During the plating process all the coins are drilled and have a small hole; You can use this to put a loop of thread through the coin if you want to hang it from your belt. Yes you break the thread to get the load. If you want to fill the hole silver coloured epoxy putty (like Milliput) would be suitable.