1935 Old Spanish Trail. MS-65 (PCGS).This brilliant and beautiful example has full mint luster and very smooth surfaces. Designed by L.W. Hoffecker, half dollars of this type were authorized by the Act of June 5, 1935, to commemorate the 400th anniversary of the overland expedition of the Spanish explorer Cabeza de Vaca. His name translates literally as "head of a cow," hence the main design element on the obverse.From the John Whitney Walter Collection.