Sure thing! Near the battery on the green chip it says:
NES-SNROM-02 (c)1987 Nintendo
Under it there is an N with a circle around it.
On the green chip near the EPROM with the sticker it says PRG

On the white sticker on the EPROM it says
SM2 D7D6 (the D:s has a - through them, like -D)

Is this all you have to know?


More differences: If you trow a shell on an enemy there is the regular sound, however, when the shell hits a wall it produces the sound Birdo/Ostro does when he gets hit.
The waterfalls have different sprites and are running really fast and have more bubbles and foam at the top of them than in the regular game, also the sound of when you get a star is different than on the regular game, it doesn't have the bongo-like drums in the background for example.