Watch List notes:

M4643Bs2 – 1000 Pesos Banco de México, 1972 Espécimen. UNC. 158 x 67 mm. Serie BLJ. Impreso por American Bank Note Company, el 27 de junio de 1972, folios en ceros, firmas impresas

ENGLISH:
158 x 67 mm. BLJ series. Printed by American Bank Note Company, June 27, 1972, zeros as serial number, printed signatures.