Check the listing for details. US NAVY - SHELLBACK - CROSSING THE LINE Challenge Coin. Condition: New. Listed at 14.99 USD. This is a great looking Shellback challenge coin. Coin has reeded edges and is about 1 9/16" in diameter. All details are raised lettering and gold plated. Coin is contained in an acrylic air tight holder. Define shellback: an old or veteran sailor; a person who has crossed the equator and been initiated in the traditional ceremony. The ceremony of Crossing the Line is an initiation rite in the British Merchant Navy, Dutch merchant navy, Royal Navy, U.S. Navy, U.S. Coast Guard, U.S. Marine Corps, Russian Navy, and other navies that commemorates a sailor's first crossing of the Equator. *COMBINED SHIPPING AVAILABLE* For combined shipping place all items in cart then purchase all items together from cart for 1 combined shipping charge...