The 1776 ~ 2026 Dual Date Mayflower Compact Quarter Series Semiquincentennial (SQ) is a commemorative coin set featuring a 25-cent denomination made of copper nickel clad. This uncirculated coin series celebrates the anniversary of the Mayflower Compact with each of five coins struck as a business strike by the U.S. Mint in the United States. Two coins are layered with 24 karat gold, and one coin is layered with platinum. Perfect for collectors of US coins looking to add a special educational and historical piece to their collection.