There was no 1,000 peso banknote in 1984. Mexico's currency was revalued in 1993 (1 new peso = 1,000 old pesos). The current 1,000 peso note (Series F) was first issued in November 2008 (polymer, featuring Miguel Hidalgo).
Pre-1993 notes (MXP) are demonetized—no legal tender value. Collectible value only: typically <$5 USD for common circulated notes; rare errors/uncirculated may fetch more.
It's either a fantasy note, a promotional item, or a misdated later issue. Check for "Banco de México" and series letter (F, G).