I am interested to know how to tell the difference between issue #1 and issue #2 cartridges.
Alternatively, according to Bulbapedia:
The species names present in FireRed and LeafGreen are cut off in early English releases of the games, most specifically those species names made up of more than one word with a space in between. This causes Pokémon like Pidgey to be listed as "Tiny Pokémon" rather than "Tiny Bird Pokémon." Internal game data lists the species name the same as it appears in Pokémon Ruby, Sapphire, and Emerald and other games, indicating a glitch in the Pokédex where a blank space is confused for the terminating byte for the name. This was addressed in later releases of the game. This is the easiest way to tell whether the game in question is a v1.0 or v1.1 release.