MARTINIQUE. Copper-Nickel 50 Cents Essai (Pattern), 1(897). NGC MS-63. KM-E3; Gad-35; Lec-4; VG-4315; Maz-166. Incomplete date variety. This is an example of a SCARCE type that seldom appears on the market exhibiting sharp design elements with satiny surfaces offering much a pleasing appearance. Ex: Rudman Collection.