Watch List notes:

MEXICO, Estados Unidos Mexicanos. 1905-pres. AV 50 Pesos (36mm, 6h). Commemorating the Centennial of Independence. Ciudad de México (Mexico City) mint. Dually dated 1821 and 1921. ESTADOS UNIDOS MEXICANOS, eagle standing facing on cactus, wings spread, head right, grasping snake in beak and right talon; all atop laurel and oak wreath / Victory striding forward, holding wreath in raised right hand; mountains in background; 50/ PESOS to left, 37.5 GR./ ORO/ PURO to right; 1821 and 1921 on mountains. Bailey 656; Grove 7695; KM 481. In NGC encapsulation graded MS 63.