Watch List notes:

M4637s1 – 5 Pesos Banco de México, (1937-1950) Espécimen Muestra. UNC. 156 x 67 mm. Impreso por American Bank Note Company, Folios en ceros, numero 861 impreso a los costados de los adornos que enmarcan la leyenda de la denominación, horadado

ENGLISH:
156 x 67 mm. Printed by American Bank Note Company, zeros as serial number, number 861 printed on the sides of the ornaments that frame the legend of the denomination, pierced.