MST3K Ep. K04 - "Gamera vs. Barugon"

This is the earliest aired episode of MST3K to be found all at once by the fans in its entirety, in 1996.

Movie Summary:

A group of men collude to steal a giant jewel from an Asian jungle; the jewel is actually an egg, which hatches into mutant lizard Barugon, who battles Gamera.