First type leather liner chinstrap with flat lever buckle and green coated rivets. It is marked with an I on the reverse close to the buckle. These early type chinstraps are hard to find. They were used on Hawley liners, St Clair liners, Hood Rubber Company liners and high pressure plastic liners with steel A washers. This chinstrap is in nicely used condition and great for display or to be put on a liner. It comes from the M-1 Helmet.com collection stock.
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